Repology might kinda help for your use case. It lets you search for software that is packaged on many different “families” of distributions. You can also filter by category.

Admittedly it does kinda depends on your definition of popularity. But it’s good at answering these questions:

• Is this widely regarded as free software?
• Has it been around for a while?
• Is it useful enough to have been packaged in many places?

They will use CC BY-NC-SA 4.0. Which means it’s not open source, and no-one else can sell replacement cartridges, parts etc.

It might still be a good printer and enjoyed by some, but it really annoys me when companies mix these terms up, almost certainly deliberately.