Ok, so after going through this entire thread over and over again, it's clear to me that the most up-to-date MSM tool that is actually working and has gotten me back to stock in late 2022 is this one:
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Now just for reference, I had a completely BRICKED OnePus 9 LE25AA (Global Version), and this MSM has gotten me back to Android 11 on OOS 11.2.10.10. Just to help those out who are looking at this thread in 2022 and aren't wanting to look through this entire discussion.
View attachment 5711373 Hope this helps you out!