Much of what you call "alt-80s" was mainstream in the 1980s in the UK, with many of the bands you love having huge hits. :)

As for this list, I love it. Here's something I wrote about 1991, and a list of singles I loved, that may interest you.

https://plethoraofpop.com/sixteen-at-16-the-dillon-empire-circa-1991-ba6c6fb7ae9a