Honestly FP2 is already blowing FP1 out of the water in terms of the excitement I felt for each reveal.
Aside from Byleth being genuine hype and Piranha Plant being a strange mix of amusement, confusion and genuine curiosity, the rest were just, meh. I have warmed up to Joker since I have played some Persona 5, but the rest were just, neat.
FP2 didn't exactly start exciting for me with Min Min, whose game I just don't like. But the other three have been really exciting for me for various reasons. Pyra/Mythra are definitely the characters I have been the most excited for in either pass thus far, above even Sephiroth.
I am hoping this means one of the last two remaining slots is also a Nintendo character, but I am well passed the point of actually trying to guess who they are after that time they said Minecraft Steve would be followed up by One Wing Angel: Stabby Stabby Mario addition.