Maybe I'm just dumb, but couldn't Gary be classified as a RJr for next season? Everywhere lists him as a RSr for next season. On the roster everyone (that was in college in 2020) else has had their Covid year already applied eligibility-wise except for Gary.
Good Pick-up Eagle-Eye. I don't know the source of the spreadsheet quoted, but as you noticed everything seems to report Gary as Senior for 2023/24. I suppose questions regarding his remaining eligibility will be addressed if/when it becomes an issue. Maybe the new 2023/24 official MBB roster will update his status when it is published (or as @HuSkaBob suggests a question for Robin)