I’ve added these three to my contribution to https://links.tiddlywiki.org. All the other links were already represented. But I would say tw5-primer is more like a CSS kit than a theme. Tiddlywiki-NodeJS-Github-Template seems to be template or a generator, not a theme precisely? Or at least not a Theme in the usual sense. The site description is cryptic.
If you visit Topic - Theme, there are now some 29 entrees for themes.