I had to go back and read all your posts to see what you have done. Replacing the condenser after seeing how it looked would be on the top of my list. I would pull the dash and replace the heater core . They are cheep. $97.00 at Napa for heater core and 2 cans of R 134 AC refrigerant 10hrs later all working. Check all HVAC actuators to make sure working,check each actuator individually with jumper wires and 9 volt battery ( remember which direction they were in and put back in same direction before moving on to next ) I believe you have 5 total. Replace if needed. I would also check the blend door arm to make sure it is not broke and moving freely. Here is a diagram to hopefully help
Screenshot_20220115-101447_Chrome.jpg