Thanks for the reply, but I decided to put some time in training mode and figured some things out on my own (which I probably should have done to begin with lol). Your options are good, and they're among the ones I found, but they're pretty unsafe. I've been having the most success with just linking 2As until one catches and then hit confirming that into a combo lol. You have to link them more slowly if your opponent is barrier guarding on the ground. Also linking a Renka after 2B works really well too. Make your opponent block two 2Bs, then link a Renka; you'll be surprised how often it works because they think they're pushed out far enough to jump away safely. Also 2A > Gurren will wall bounce jumpers, which is nice.
You're absolutely right though, I shouldn't preoccupy myself with punishing opponents for jumping/back dashing out. I try to punish them for it, but sometimes it backfires. I should be happy that they're giving up positioning.