A PNW commuter here...not OAK/LAS...I find that there are mostly commuter lines available, but rarely TOTAL commutable lines. However, because of ELITT (MAX grounding notwithstanding), I can usually get a line that is 0-1 hotel nights per month. Lately, I have been preferring AMs because the hotel cost is pretty low and I really prefer getting home to going in the night before.
Right now, all the commutable trips are min credit with long midwest/east coast overnights. One leg on day one, one or two legs on day 3 or 4. Not terrible, but not optimal.
YMMV