but I don’t know of any equivalents for Vanilla GT6.
That’s because few people know GT6 even exists, less care about it compared to GT5U since even six/seven years ago that was the “go-to” version for modpacks because GT6 was still in its infancy and even now people still only use GT5U as a base because of GTNH. Because of that there’s only a handful of people who ever made addons to GT6, and on top of that, most of them are broken because of version incompatibility or abandoned now (RIP qwertech).
Then again vanilla GT6 has picrelated.