Find Any File is my go to. (I haven't even got a Spotlight icon in my menu bar!)
I already tried your search and wasn't successful, but I tried without booting into High Sierra. I'm going to boot into it later and report back. Changing my search engine pref will hopefully flag a file with an in-your-face modification date, same as it enabled me to identify the correct Catalina file.
Since TextWrangler bit the dust I use BBEdit (Basic) for examining files.