Way back when, Stevie gave the rights to BC and one other song I cannot remember the name of to the Arizona Heart Institute. So, they get money from the sales of that record(s).
She as well as FM also often perform at benefit concerts.
LB gave a song (Peacekeeper) to the ACLU. I am unsure if the ACLU is a charity, but it does do "good work" in that it defends human rights no matter the political affiliation of the defendant (no political freazy please
).
I seem to remember reading over the years that they are all charitable in that they at least have performed benefit concerts, given songs to charity, etc.