I can recommend the
Wiki for a general overview, but do note that it is officially endorsed by Wyrd, and will therefore try its hardest to make it even the most subpar pieces palatable.
Here's my analysis of each master's playstyle:
GuildLady Justice: Brute force melee master. Easy to play, not difficult to master. Is fairly resilient and can buff allies by killing stuff. Designed as a soft-counter to Resurrectionists.
Perdita Ortega: Fast, hard-to-hit but fragile Gunslinger. Has some defensive tricks, and can deliver alpha strikes by activating simultaneously with other Ortegas. Easy to start with, requires some finesse to get the most out of her. Designed as a soft-counter to Neverborn.
Sonnia Criid: Combat mage focused on nuking. Not terribly difficult to play. Rather soulstone hungry. Designed as a soft-counter to Arcanists.
C. Hoffmann: A machine focused master. Incredibly weak on his own, but incredibly resilient with constructs nearby. Moderately difficult to play. Favors missions where you don't have to spread out your forces.
Lucas McCabe: A mounted master focused on crowd control. Can be customized with a stache of magic items. Incredibly fast, and can deliver alpha strikes with his black sheep. Can't say for sure how difficult he is for beginners, but he doesn't seem like a bad choice. Can be played as either 10Thunders or Guild.
Lucius Matheson: A resilient henchman (henchmen are mini-masters that can either be played on their own or recruited into another master's force) focused on buffs and support. When on his own, he can only hire Guild Guard and Elite Devision models, so he is rather limited. Most henchmen require some experience to play properly, and I wouldn't recommend Lucius to beginners.
ArcanistsMarcus: A "druid" type master focused on beasts. Beasts are hard hitting and have high mobility, but fold under pressure. Marcus is rather difficult to play well, and is considered one of the weaker masters of Malifaux.
Ramos: A machine summoner. Can replenish his crew with new machines, has some damage and crowd control, and can suicide bomb with his constructs. My experience with Ramos is rather limited, but I believe he requires some amount of finesse to play correctly.
Rasputina: The icy counterpart to Sonnia's fire magic. Slow but hard hitting, can cast with her crew as the point of origin for her spells, and deals tons of damage. Has some crowd control, and most of her minions are incredibly resilient. Easy to play, but hard to accomplish certain schemes due to low mobility.
Colette DuBois: A showgirl madam. Has some of the best crowd control, good mobility and soulstone generation. Will rarely win by dealing damage and is incredibly unforgiving, and therefore not recommended to beginners. I do consider her the strongest Arcanist master for competitive play, and if played will well, will utterly demolish the enemy.
Mei Feng: A melee mage. Can chain combos together via triggers, allowing her to deal a lot of melee damage with superior action economy. Moderately difficult to play (you need to keep all possible combos in mind or
use the cheat sheet. Can be played as either 10Thunders or Arcanists.
Kaeris: The Arcanist henchman, a flying mage with damage dealing spells. Not terribly experienced with her.
ResurrectionistsNicodem: The classic zombie necromancer. Nicodem is slow and easy to hit, but can bolster his crew with minions (everything from lowliest mook to hard-hitting elite) and has some nice debuffs. Requires proper positioning, but isn't too hard to play otherwise.
Douglas McMourning: Fast, hard hitting melee necromancer. Can regenerate wounds by dealing damage and summon creatures made out of body parts. Probably the easiest Rezzer to get into the faction.
Seamus: Jack the Ripper with a huge handgun and undead prostitutes. Can do a bit of everything, although he is generally the worst summoner. Recommended for beginners.
Kirai Ankoku: A spirit summoner. Kirai gathers the souls of those who die near her, and can create spirits out of those souls or use them for utility. Her force is among the most mobile in all Malifaux, but due to her mechanics (requiring close proximity to combat and using wounds to cast spells), she is probably the most unforgiving master for beginners. Played correctly, she is a force to be reckoned with.
Yan Lo: Gathers Chi from nearby dying models, and uses it to level one of three paths (like an RPG skilltree), allowing him to be played as mobile, resilient damage dealer. Uses ancestors as minions, whose abilities he gains when they die. Unlike the other Rezzer masters, he does not proactively create minions, but rather resummon those ancestors that have died. Can be played as 10Thunders or Resurrectionists.
Molly Squidpiddge: An undead henchman that can buff her minions. When played on her own, her selection of minions is very limited, so I wouldn't recommend her.
NeverbornLilith: Fast, hard-hitting master with very high defense. Her minions, the Nephilim, can be upgraded by drinking the blood of those killed, making them larger and more formidable. Lilith is rather straightforward and very beginner friendly.
Pandora: A master focused on willpower duels. Her stats are deceptively low, but enemies lose wounds when losing a willpower duel near her, and she cannot be attacked unless making a willpower duel. She has some crowd control shenanigans, and focuses on debuffs and attrition. Frustrating to play against when one doesn't understand her mechanics.
Zoraida: A voodoo master with lots of crowd control. Can hire low-willpower minions from all factions, making her very versatile.
The Dreamer: An elusive little kid using a combination of teleportation/creature swapping mechanics to achieve devastating alpha strikes. Very fragile on his own, but difficult to catch. Can swap himself with Lord Chompy Bits, a huge Nightmare with good offensive abilities but weak defense. Has been heavily nerfed, and requires careful planning and good knowledge of mechanics to play succesfully.
Jakob Lynch: A master focused on card manipulation. Weak on his own, but comes with hard hitting totem, the Hungering Darkness. His crew spreads a debuff called Brilliance, which he can utilize for various effects. Can be played as 10Thunders or Neverborn.
Collodi: A puppetmaster henchman using movement shenanigans for long range alpha strikes. Very narrow focus, but synergizes well with certain masters like Zoraida.
OutcastsLeveticus: A master using constructs and undead minions. Can only hire those, but from all factions with no surcharge. Leveticus has some of the hardest damage dealing abilities can create minions, but everything is fueled by his life force. He does not get to draw cards the standard way, but rather, whenenver he dies, he respawns at the end of the round with full health near one of his two hollow waifs, which are then removed. He can then draw cards up to his hand size. Leveticus is a difficult and expensive master to play, and definitely not beginner material. If you decide to play him, I recommend purchasing the hat pack from Wyrd, and cover up his bald spot with a bowler hat.
Som'er Teeth Jones: A gremlin redneck master. His crew is limited to gremlins, pigs and mosquitos, but he can summon and buffs those to a certain degree, allowing him to bumrush his opponents. Rather difficult to play well. For those wishing to play Gremlins, I recommend starting with Ophelia and slowly expanding towards Som'er.
The Viktorias: Two sword wielding masters for the price of one! The Viktorias can only hire mercs, and are generally melee focused. They can slingshot each other into melee with their abilities, where they can wreak havoc. The Viktorias are rather easy to play, and recommended for beginners.
Hamelin the Plagued: A piper using rats and street children to spread plague. Has been heavily nerfed recently, which greatly impacted his playstyle, so I can't say much about his current state.
Ophelia LaCroix: A henchman. Her crew is the gremlin variant of the Ortegas, with many similar minions. Easy to get into, fun to play.
Von Schill: If Boba Fett and Chuck Norris had a love child, it would be this guy. A henchman utilizing paramilitary special forces, he is a hard hitting, difficult to pin down ranged attacker with high mobility, buffing auras and soft counters to construct/undead armies. Often hired by other masters, especially Viktoria.
10 ThundersMisaki: A high mobility, single target assassin. The only 10 Thunders master that isn't dual faction. Not terribly experienced with her, but her mechanics suggest that some finesse is necessary.
Tier lists, as always, are highly subjective, but here's mine:
Tier 1: Colette, Kirai, Jakob Lynch
Tier 2: Zoraida, Pandora, The Dreamer, Collodi, Yan Lo
Tier 3: Mc Mourning, Lilith, The Viktorias, Perdita, Leveticus, Lady Justice, Sonnia Criid, Lucius, Von Schill, Kaeris, Som'er, McCabe, Misaki
Tier 4: Ramos, Nicodem, Hoffman, Ophelia, Seamus, Hamelin
Tier 5: Rasputina, Marcus, Molly