Arduino for STM32

ok have been looking again at the confusing list of board variants.
Have looked closely at STM32F756ZG which on the overview page lists :
Up to 168 I/O ports with interrupt capability
Up to 164 fast I/Os up to 108 MHz
Up to 166 5 V-tolerant I/Os

I have also looked at NUCLEO-H723ZG & NUCLEO-U575ZI-Q ...

I have a project I want to make that needs around 96 directly controlled DIO pins. I had started the project with a Teensy4 but soon realised I could not use auto direction level shifters as these caused oscialltions in the signals. So I needed an extra 42 pins so I can control the IO direction ...