Are nets from KataGo - Networks for kata1 stronger than previously released nets?
They are the same nets. Modified to fit new engine. Because new engine’s update, they are a bit stronger than before.
Yes, all nets from b40c256x2-s5095420928 and older are the same as the run from 2020, but the nets past that are newer and span an improvement of about 200 Elo points since then.
KataGo is still improving and growing (https://katagotraining.org) thanks to the many volunteers who have been donating computation power to help generate training data for it… and could always use more help, if you have some spare GPU power! 
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