Not Charging, pulling my hair out.

Good work. I have had "all of above" in various Mopar cars.

My 69 Dart wouldn't charge even after a new alternator. I connected a jumper cable from the new alternator's case to BATT- and the ammeter then showed "C". It was a bad electrical connection between the case and block (aluminum is tricky).

My 82 Aries, w/ square-back alternator (same as later Darts) would burn up the 3 floating diodes every year like clockwork (even in winter). I became proficient at splitting it open underneath the AC compressor (since a pain to remove that) and replacing just the diodes. By cutting cooling slots in the diodes, I got them to last >2 years. I attributed it to the transverse engine layout not giving enough air flow thru the alternator.