Indeed, "joy2key2" is a great program!
Following games are also "Joystick supported" state.
Jet Set Billy (Original,1993)
Jet Set Willy '97 (1997)
Jet Set Billy: New map by Rob (1999), changed instruments to distinguish this version
from the original Jet Set Billy game (made in 1993).
Jet Set Billy: New map by Chris (2015)
Visit "Jet Set Willy Paradise
" and doubleclick each floppy icon.
Tested on my CD32+ Analogic FDD (& SEGA 6button pad).
It was comfortable control.
Chris' Map is recommended first.
Jet Set Willy '97 is also fun.(You can see map from the webpage above.)