Wow you just shined a ton of light on a problem my company had. We wanted to implement a medical imaging system from one of their subsidiaries, and it took an average of 3 months for the salesperson to respond to EACH of our emails
I know Gnome is in your less important list, but Wayland is in your important list, so I’ll recommend KDE Neon. It’s Ubuntu without snaps and moronic auto updates, so it really just feels like a more desktop-ready Debian
Considering how much Google has entrenched itself into the Internet (see manifest v3 fiasco), I would argue that creating a new browser is a fork of the web