Titles are based on alt text. I don't have all the links for these archived unfortunately, so bear with me. In no particular order, aside from billboards being listed last...

WE'VE MERELY JUST BEGUN, courtesy of the wonderful ChumpbudChumpbud. I think it links to https://www.youtube.com/watch?v=-xnhL5LvL7U&list=PLiisicSkNTuPcvYD3zi1Eczi13F6syFR-&index=19 [play] but I'm not sure.

Raccoon Girl, by El P. Probably links to https://raccoon-girl.co.uk/

Homestuck Community Discord. I can't lie, I didn't know he was still paying for it. Anyone got a spare $1.01?

I HAVE NEVER READ THIS COMIC, also by Chumpbud. Links to https://www.deconreconstruction.com/vasterror/1. How valiant!

Rankless Billboard, presumably by Ryan J.S. Chandler: (WARNING: NSFW link - nothing graphic, but the text is very risque.) https://ranklessthecomic.com/rankless-25.shtml