While "yes" ... there are only so many that are big. Getting the top 100 cat subs and going from there would be a nice ballpark number.

Its one of the "this might be a fun thing to do if you're playing with a ML image classification problem."

I've got a Mac and so https://developer.apple.com/documentation/createml/creating-... has tempted me on occasion to see "how much can this thing do?"