eli gerstner’s site has for his music, YBC, technoy, menucha (i think)
shalsheles.com has for shalsheles and shalsheles jr
yehuda! has sheet music downloads
at one point i was able to get baruch levine sheet music but now his site is different
i found just now a site called livejewishmusic.com. click on sheet music and it seems to have downloads for lots of stuff
journey’s has a song book. you can probably get it from mostly music