Alright, after literal hours of going though a tedious process to find offsets, I finally managed to uncover the data for the Japanese and Korean versions; Glad there's no Crystal in Korean, that lessened my boat! XD
But do note that I can't completely confirm some things such as Mystery Gift as I don't have access to the games of those languages for 3DS VC, so that's where you researchers with those copies can come in to clarify if they're on point, as well as any other data that you think is invalid/incorrect. Also still need Mom's savings in Japanese and Korean.
As a bonus since I'm feeling nice today, here's the hex data line for one of Carrie's teams from Stadium 2:
32 9D AC 81 2B 6C 32 63 98 0B 0C 6A 32 65 57 81 CD 71 32 D4 E8 A3 61 74 32 E9 A1 3C B0 9F 32 A6 81 08 5B DB
@theSLAYER I found the offsets a while ago for the GS INT (and speculated the Japanese and Korean offsets). I tried modifying the bytes of the ones staring at offset 1XXX, but they didn't seem to do anything (also couldn't find any hint of the Japanese ones stored twice), modifying the ones at 2XXX worked: I changed Raikou at offset 2B82 to TTar's byte and it was on its dex entry as a roamer!
But anyways, here's my docs:
GS INT:
Raikou: 13E0 and 2B82
Entei: 13E7 and 2B89
Suicune: 13EE and 2B90
GS Japanese:
Raikou: 2AE6
Entei: 2AED
Suicune: 2AF4
GS Korean:
Raikou: 182C and 2BC4
Entei: 1833 and 2BCB
Suicune: 193A and 2BD2
Didn't look at Crystal since it's different with Suicune not being a roamer, but I assume you're looking at it?