Thanks to daydreams-at-midnight on Tumblr for the visual code guide.
Turns out there still is some variation with the beginnings of the Wave 2 (unknown about Wave 3) mini codes.
This cheat sheet has worked for me thus far, but the only one I wrote the full code for was Candy Abbey’s being 20360B24. So assume if the codes don’t start with a 200 number, this is not guaranteed to work.
If they start with a 0 all I’ve seen is Skelita being B31, and PG Rochelle being B27. I have yet to personally see one start with 0, but they’re out there.