I think my rear derailleur is squeaking. It only happens under stronger forces, like 8% grade pedaling. I thought it was my bike shoes/cleats but I lubed that to no effect and it seems like the sound is coming further back. It is much more pronounced on my right stroke which made me think it was the shoe/pedal on the right side.

Anyway the next thing I was going to try was to clean/lube the jockey wheels. Any other suggestions? The chain is new and recently lubed.