This is the list of changes I sent over to Kccitystar for the roster update in the future if it helps you out. I have all the large, medium, and small logos.iff files updated to 2021 based on these changes.
Mobile Bay Bears – Name Change to Rocket City Trash Pandas
Inland Empire 66ers – Name Change to Tri-City Dust Devils
Rock Rock Express – Moved to AAA Texas
Bakersfield Blaze – Name change to Asheville Tourists
Jackson Generals – Move to AAA Houston and name change to Sugar Land Skeeters
Las Vegas 51’s – Name Change to Las Vegas Aviators