[sischoel]

Such graph collections are super helpful when trying to figure out if some theorem holds for a certain graph class, although only up to a certain size.

I think a lot of these graphs where generated with the genc.c program included in nauty (official website: https://pallini.di.uniroma1.it/ -- unofficial Github repository: https://github.com/lonnen/nauty). With the computing power that we have nowadays it might be easier to just to just run that program.