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.
I generally use the latest available.
I tend not to use flatpack. I lost a few nights trying to get OBS plugins to work in flat pack. It would probably be fine for something as simple and straightforward as signal. But it’s more or less nothing but disadvantage to end users. That said I’m sure it’s a great savings for you guys.