For the 10 button side I used a clip-on Audio Technica ATM 35 and for the bass side a Shure SM57.
This combination worked well for Cajun.

Shure , AKG, Samsom, Sennheiser and other brands make good mikes too of course.

See website link#2

I don't know if the wireless option is better ?

I also have two accordions with internal heavy weight microphones :-)
Grooming noisy sound ;-)

Further there's quite some information on this forum too and on the website from Big Nick is
also some knowledge about that.