You honestly may as well submit an app to Frontier, you’re not necessarily competitive, but you never know, especially if you visit them at a career fair.
Other that that, not much in the regional world in MCO. That said, the commute to PHL isn’t too bad, lots of daily options. JFK/LGA also quite doable. To that end, consider Republic, Piedmont, Endeavor and Envoy. Others can chime in on the commute to CLT and other east coast bases.