I run NetNewsWire as my feed reader - with Feedbin doing the heavy lifting. LOTS of feeds ... that I keep organized in folders.
(Don't judge)
You will notice that one folder is called MicroBlog. Every now and then I export the OPML and drop it into MicroBlog and 🖇️ update with the latest
The list itself is curated by adding to NetNewsWire as I find them. If I find a similar list, I import that OPML and what I haven't already got is added.