Shimano Drivetrain: Cross-Generation, Same # of Speeds Compatibility - Weight Weenies
Shimano GRX component series is the first dedicated gravel group w/ 10 & 11 speed options - Bikerumor
Nas Cycling - Hi, I made a compatibility chart for a 2x10 mullet drivetrain. If you're looking to repurpose your old Shimano 10 speed road shifters for gravel riding, this might help
9100 & 9000 compatibility ? | Road Bike, Cycling Forums
Any bike mechanics, help needed....Ultegra 6870 and R8000 compatibility - Equipment - TrainerRoad
Nas Cycling - Hi, Here's the list of all compatible shifters & RD combo for dropbar wide range (40t to 52t) gearing setup. This is base on the compatibility chart and known
Shimano 10-speed compatibility
Shimano Compatibility | PDF | Wheeled Vehicles | Vehicle Parts
Any bike mechanics, help needed....Ultegra 6870 and R8000 compatibility - Equipment - TrainerRoad