Thinking of hosting one for myself and was wondering what the downsides of each are. Do they all interact fine with each other? Can I log into mastadon apps with misskey/pleroma accounts? Is it like lemmy where the app specifically needs to support mbin (interstellar) to use that account?

Which one requires the least resources? I'm on ios so I'll likely gravitate towards whichever one works best with ios apps. I do see that sora sns seems to support all of them + bluesky.