Gorilla
Gorilla has 2 watches in the database across 2 model families. Lug-to-lug runs from 57 mm to 57 mm, with a median of 57 mm, alongside case diameters of 44 mm and thickness of 13.8 mm to 13.9 mm.
None of them fall in the balanced range on a 6.5-inch wrist, so check the wrist guide before choosing.