8th and 15th AF were already tagged for conversion to B-32 Terminator/Dominator but the war ended meanwhile.
B-45 Tornado was slated to replace the B-25 and B-26, but with the end of the war, the project was put on backburner. Possibly Douglas B-42 Mixmaster or B-43 Jetmaster would have to have been adopted while the Tornado's teething problems were sorted out. Also, it's wartime, so competing offerings are all ordered instead of just one winner.
Would there have been a licenced Nene-powered (J42) F9F Panther rushed to production? In OTL, licenced Tay (J48) was used instead and development took longer.