I noticed my computer (when running Mint 22.3) didn't turn off the screen even when the lid was closed, when I said "do nothing". (You may jest, but that's the setting for "turn off the screen when closing the lid" on my past Windows computers.)
I don't want to lock or suspend the computer when I close the lid -- just turn off the screen. There's an applet to specifically turn off the screen, but I can't seem to find this in the power options themselves.