I'm looking into doing some builds with the pelta more or less the Assault pelta. What are some good builds for both Command and Assault? Also what are some good commanders to use with this ship?
Pelta builds
Rieekan Rapid Launch Bay Command can be a thing. In fact, the command pelta is an admirable carrier no matter, it just is stuck between yavaris which is auto include and the assault frigate which can take flight controllera.
It can do some crazy stuff with the title though. Like take fighter coordination and flight commander which is good, but can also add adar for yavaris tech or raymus for either an extra squad or constant all fightera follow me for your B Wings (or combo with expanded hangar for squad 6).
As for assault, really only time I seen one used decently was in a Leia led task force antilles hammherhead swarm. Came with Raymus, projection experts, shields to max and external racks. He took the token, resolved the leia command which let him keep the hammerheads shields all topped off and still have some leftover to regen his own.
Leia is pretty good with it. I recently thought about trying Mon Mothma with the assault ship
Here are two 400pts Pelta Yavaris lists, I've been dabling with, its so much fun when you can move your B-wings/X-wings at +1 speed from turn 1 
I've only played the first list, and only once, so I can't say if its a very good combo
However the 600pts variant of the above lists has obviously much better synergy, when an extra MC80, HH and sqds is added to the list.