STM32f GPIO's on 1.8V
I'm trying to figure out what GPIO voltage levels on an STM32F4 would if I have my VDD at 1.8V.
What is my minimum Voh and max Vol range for CMOS on an I/O Pin if my Vdd is 1.8?

The table which you kindly included, might suggest that it was for a device which was only supported down to VDD = 2 V (i.e. the lowest voltage mentioned in that table).
However the datasheet for the STM32F437 gives these VOL and VOH figures below, which specifically include VDD = 1.8 V as you asked: