SoEW - ReimuC (Shorter bosses = shorter game! ...I really hate SoEW)
PoDD - Mima (strong level 1, decent scoring potential, pretty good against AI without being op)
LLS - MarisaB (easiest to control where and what you're shooting)
MS - Mima (good speed, good power, a bit of a spread, too good)
EoSD - ReimuB (standard forward shot, strong, good bomb)
PCB - ReimuB (forward shot, good bombs, good cherry gain, strong, doesn't wreck your cherry as badly as other shots when you fuck up. MarisaA is cool too I guess)
IN - Varies (Border/Ghost teams, Youmu, Marisa are all cool)
PoFV - Marisa (easy to use, I don't play PoFV much at all)
MoF - ReimuC (rewards getting close without being totally useless at a distance like some other spread shots)
SA - ReimuA (it's just good. Also the other shots either feel awkward or suck)
UFO - SanaeB (good at basically everything. Her bomb is a bit too much for the poor UFOs though.)
TD - Reimu (I prefer her speed over Marisa's, Sanae is garbage, Youmu too awkward)
DDC - ReimuA (stages are more interesting when you aren't pressing X)
Touhou 15 - Mima (it'll happen for sure this time!)