I'm noticing lots of 1.5 in. LMBass this year in my 1/2 acre pond w/ LMB, YP, BG, and ES. Pond is in its 3rd year. Just curious as to whether they provide some forage for the adult Bass and YP.

Definitely. But if you have too many LMB you may want to remove some in the overpopulated classes.

All fish eat whatever fits in their mouth.