I built an open source webapp that helps you find the optimal Google Compute Engine (GCE) machine type in the many Google Cloud regions. I hope the app helps you too. Any feedback is very welcome.
Vaguely related. I wrote a script years ago that grabs the cheapest region for each Spot Instance on AWS. Haven't checked it in years but it still seems to work : https://simonpbriggs.co.uk/amazonec2/
What could be missing is the GPU aspect.
Not sure if the data is available, but it is very unclear to me which GPU is available on which machine type.
and also how many, so that I have some chance to get one.
In the Instance Picker in the "More" section you can find the GPU Filter. Additional GPUs can only be assigned to N1 and A2 instances. The whole Accelerator topic is very specific. Maybe I will expand it further if more people find it helpful.