Tabaxi Rogue With Second Story Work

Does a Lizardman monk or Barbarian have an AC of 13 plus Dex and Con/Wis modifiers?

Are Tabaxi claws considered finesse weapons?

So a Tabaxi can use its’ “claws” as an unarmed strike?

Does a tabaxi monk get to choose whether their Martial arts unarmed damage is slashing or bludgeoning?