There are big wishes for Signal to adopt the perfectly working Flatpak.
This will make Signal show up in the verified subsection of Flathub, it will improve trust, allow a central place for bug reports and support and ease maintenance.
Flatpak works on pretty much all Distros, including the ones covered by their current “Linux = Ubuntu” .deb repo.
To make a good decision, we need to have some statistics about who uses which package.
That’s the biggest pain point with Signal and WhatsApp in my opinion. Telegram does it, but then of course it’s much easier for them to support. Sharing content from my tablet is such a hassle.
I use warpinator to share between my phone, laptop and desktop at home. It uses the local network.
But yea, I use signal to share often, when I am out.