As for Snipers or Archers, Archers are more thematic, but trade in killing power, defensiveness, range, and melee presence for versatility that vanishes as soon as they are engaged or die, which they are likely to do because of lacking defensiveness, range, and melee presence.
If you're looking for Ten Thunders and Outcasts, Misaki - the rebellious daughter of the Oyabun, the current de facto leader of the 10 thunders, and the disciplined whirlwind - is absolutely the way to go. She can bring the aforementioned Jorogumo and Torakage into your crew in either faction, as well as Oiran. I avoided mentioning Oiran, not because they're not good, but because they're what most westerners believe Giesha were, and it's an uncomfortable topic. There's also the Wukou Raiders coming out soon, who quite simply make a killy Master even killier.
The Effigy is an interesting choice, being part of The Metaplot - Someone tried to infiltrate all the factions by making puppets that embodied their concepts, forgetting that one of the Ten Thunders' core concepts is loyalty to the Ten Thunders, no matter who you may look like you're working for. It's also a good cheap option - not an always-take, but when it can show up, it protects your leader and keeps your minions winning the game.
The robot dogs, the Komainu, are based on actual statues of lion dogs that were said in real life to be guardian spirits for places of importance - hence the name, translating out to Lion Dog. In Malifaux, the "said in real life to" gets removed from that sentence, and they protect things. Unfortunately, they're thematic to a very specific set of models and do better protecting them, and you don't have any of the Ancestors at the moment.