If you want x86-64 support in fanless, take a look at Celeron (low powered) based industrial PCs. Qotom comes to mind. You can get a passively cooled machine. Most come with a NVMe and 2.5 slot for storage, do doing raid 1 is possible without external storage. I’ve bern running my J1900 based one for nearly 5 years and haven’t had an issue with hardware at all.

If you already have nextcloud, it isn’t a bad simplistic recipe manager. I think it needs fom improvement though.

Nice that it natively supports multiple users. Many dont.

If you don’t need much storage internally, I like lots of a Celeron based industrial SSF from qotom. For rack mounts, i like used Xeon-D U1-2 servers.

If I need bigger processing power for home, I like Ryzen (preferably 3000 or newer) processors in some of few ryzen entry-level server boards.