Ok it’s somewhat hilarious that I ended up deciding to take another shot at transcribing by ear on Folsom Prison Blues, and I ended up a half step flat of Josh on the recurring root/fifths. I played the C# and F# in Josh’s tabs and it sounded worse so I went and looked through the 50 first song threads and it seems like the tuning is all over on different versions. I ended up matching this Ultimate Guitar transcription pretty closely Song 4 - "Folsom Prison Blues" by Johnny Cash - #153 by Barney that Barney screenshot in the thread so I guess I’ll call it a win-ish.
My head hurts now lol.