I can provide you the following opml extract of my RSS feed reader.

Most are custom blogs, I also source from HN, Lobste.rs, a french news feed (Developpez) and dev.to, and I also shamelessly provide my own blog under the category "Artemix".

You can import what you want from it.

Here's the dump link: https://hastebin.com/agigejubuj.xml