You might check out wiim stuff. They seem to be the darling of budget streaming for the moment.

There have been a few mentions of Navidrome. I find it works well for sharing at an album or even artist level. It can do playlists as well. But you must explicitly choose what to share, at which point it’s generates a unique URL and will generate a web player and zip if you enable the option to download.

You can, of course, just make user accounts and distribute credentials.

If you’re needing to offer browsable folders to easily copy, basically a filesystem-like experience, it’s probably not the best tool.

Edit: one more thing to point out is that navidrome, jellyfin, and airsonic all construct music libraries differently. Navidrome is using tags, jellyfin uses file names, airsonic uses directory structure. Not sure about Plex.

I feel like the argument for using a nonstandard ssh port these days is that you dodge the low tier automation/bots that are endlessly scanning IPs and port 22 and trying obvious usernames and passwords. I do also question how much it is worth dodging these since presumably you’d have already done the other basics like key only and no root login before this. Maybe there’s some value if you want a clean auth.log or equivalent

Backblaze B2, which I’m pretty sure is a repackaged S3 provider, or you can just skip them and go directly to AWS S3; though, both aren’t drag and drop user friendly like onedrive or gdrive. But both work well if you invest a little time with something like rclone.