A few for different use cases. NixOS on my wife’s 14 year old laptop because it proved to handle the hardware the best, and she struggles with change so if that system dies the NixOS configuration can be redeployed identical to how she had it with no additional effort.
Debian on my old IOmega NAS.
OpenSUSE on my personal PC and Work computer, since it supports my proprietary CAD software, and nVidia releases a driver specifically for SUSE/OpenSUSE use.
I will add if you send a proton encrypted email to a non proton user they get like a weblink version that decrypts for viewing. And it has an expiration date.