I’m trying to copy a bunch of text that has formatting - headings, bold, etc and paste it as plain text without the formatting. I’m new to markdown so I can’t figure out how to do it. When I Ctrl-V or even Shift-Ctrl-V all the markdown formattings comes in as well.
I searched Plain Text, Remove Formatting (both here and on the interwebs).
Haven’t tried it, but maybe something like that: GitHub - leschuster/obsidian-advanced-copy: An Obsidian plugin to copy Markdown and transform it into HTML, Anki, or any custom format. Create custom profiles with versatile templates tailored to your workflow..
Maybe you can tailor it to remove everything Markdown or HTML-related after copying.
Cheers, Marko 
Switch to reading view and copy from the reading view
This will populate the clipboard text/plain category with the plaintext (with markdown formatting characters stripped) and it will also populate the clipboard text/html with the html formatting
So if you then paste into an app that only supports plaintext, it will paste the plaintext without markdown formatting
If you paste into an app that supports html formatting, it will paste the HTML formatted text (but if this isn’t desired you can use ctrl + shift +v to paste the text/plain instead- this works in most apps).