Well it all depends on exactly what ground is being cited as being 'broken'. Obviously, TOS made massive in-roads in special effects, set design, wardrobe, etc; for TV of its time - and many will cite the promotion of 'minority races', and the pushing of the cultural envelope by Broadcast Standards of the day.
so like many things, the answer lay in how you are looking at the series.
As far as these 'Other TREKs' are concerned, I know nothing about them, as I have barely seen any of the TNG episodes, I have never seen any of the others, and hardly any of the movies - my lexicon of TREK is all about STAR TREK the original series, so I can't speak on any of them.
Let me know when you are ready 'Captain Sisko', as I have a real 'doosie' cooked up for you to gnaw on this time LOL!