Remdesivir has very mild positive RCT evidence, but overall I've seen little evidence. It would be given to severe cases only and it has a lot of side effects, so I'm not a great fan but on the other hand it might, with careful use, do some good.
HCT and Ivermectin have less positive evidence than Remdesivir, AFAIK. Ivermectin just has not been studies, and the evidence from in vitro studies is underwhelming. HCQ has been studies a lot, without the positive evidnce emerging you would hope for. So I'm negative about all three, also not certain about all three.
I agree there is much less negative evidence about HCQ in prophylactic role - that is because AFAIK there is littel evidence at all for that. Following Lou, you might want to look carefully at recovery times with / without it. The trouble is we still have no RCT. I think (maybe wrong) the UK is doing an HCQ prophylatic tretament RCT? If so we will get evidence.
I will argue with doctirs if I think they are ignoring evidence - but not argue for something on basis of observational trials that really prove nothing.
THH