Table with short overview at the bottom of the link. https://www.clinicaltrialsarena.com/analysis/long-covid-19-drug-trial-results-to-watch-in-2022/
Cannabis, the SSRI and maybe a few others look likely to show some benefit although we all know the limits of this stuff. LDN/Niacin, Boswellia/Curcumin/VC are also well known. I've heard about larazotide acetate for a while for various GI ailments, althought it seems that's not what it's being tested for. I have no idea if it's effective or not. Axcella health is amino acids? Also don't know much about Resolve Therapeutic's