OpenSUSE, mostly because they differ too much from other distros, often even without any (obvious) advantages.
For example a lot of file paths (config files and such) are different, and when being used to other distros (or just following a guide from the internet) it takes longer to find it (I know there is Yast but I’m not a huge fan of that tool either)
Also, Manjaro
Doesn’t this affect Signal too? There is a setting under “Privacy -> Advanced” called “Always relay calls”, which routes calls through Signal servers to prevent IP leaks (and can decrease call quality)… This setting is disabled by default