I've read a lot of webcomics. I've hunted them down like an old man with a british accent and a safari hat. I started reading QC more than 10 years ago. I have looked on nearly every page of this subforum looking for the webcomics thread-- I probably missed the one relevant page.
I won't argue with your suggestions, I'll just report if I happen to read a good one that you recommended. So you'll know my taste, here's a very incomplete resume of comics I've read (most likely in full, at least up the current one)
* Freefall* Stuff by David Willis * Girls with Slingshots* O human star* Real Life Comics
* A Girl and Her Fed* XKCD* Unshelved* Quantum Vibe* Yellow Peril
Bonus points for stuff that's CC-licensed. I'm a big fan of that, but it's rare. ND really doesn't count. I don't think any of the comics I mentioned are CC-licensed, except XKCD.
Other stuff I've enjoyed (including things that are subjects in this subforum)
* Eddie Izzard * Russell Peters * George Carlin* Red Dwarf * Daniel Quinn * Alan Partridge* Reggie Watts * Transmetropolitan * Babylon 5
I read/bought all of Transmet and loved it, but I usually don't read graphic novels. I don't buy things from Amazon (not since the Kindle was invented-- I complained bitterly about DRM on books before it existed, and I was a happy Amazon customer until they betrayed the human race) and I don't live near a bookstore anymore. I'm more likely to buy merchandise or do Kickstarters, as I did with QC. I've purchased CC-licensed books in paper form. I haven't gotten into Patreon yet but it's clearly a good idea.
Project your personal biases and favourite things onto me-- make me read webcomics you like. Please. If I missed a rule about webcomics on these forums, just use PM. I doubt that would happen, though I can't figure out why (other) webcomics aren't discussed here more often, so I'm only mostly kidding if maybe I missed a rule about it.
There were more newlines here. I put some back. Some are still missing after that. Imagine more newlines here.