Here is one of the top of my head; https://perfectmediaserver.com/.
I’d say it boils down to what you see yourself hosting, what do you need/want? There are many great YT content creators out there documenting their experiences, tips and guides. HardwareHaven, Raid Owl, Jeff Geerling, Christian Lempa, TechnoTim and Wolfgang to mention a few.
JupiterBroadcasting has a wide variety of Podcasts dedicated to both selfhosting and linux stuff if that should peak your interest.
If you need tips for what to selfhost, here is another great resource :) https://github.com/awesome-selfhosted/awesome-selfhosted
This does seem like the way to go, thanks for the tips!