I'm too sure about the recovery times for these conditions you highlighted. A quick search tells me it's between weeks to months, depending on the severity.

For long-Covid, the recovery period is also uncertain. As far as I understand, if long-Covid doesn't recover within 6 months, chances of full recovery become minimal. I previously discussed this here if you're interested:

https://medium.com/microbial-instincts/your-chance-of-full-recovery-from-long-covid-is-not-100-134dfeebb84f?sk=7f3aa60341eb2a7f34a402fe86dd8dd6