I get compile error when I try to use the pin name PD10 (e.g. in a list of FSMC data pins).
The Nucleo-144 STM32F767ZIT6 144 PINS has many more pins than available as names (#define) in variant.h
The Nucleo-144 STM32F746ZGT6 144 PINS seems to have these pins in variant.h (Morpho Pins).