Tried various Golgari builds and messed with Muldroth Golgari a lot. Others included Vraska GB, Vraska GBu, Journey to Eternity lock, and explore reanimator. Golgari and espesh Vraska Golgari Queen planeswalker is pretty meh. Noticed a lot of the time I either cast Carnage tyrant or lose (like casting a 5cc reanimation spell for 6 mana carnage tyrant is so bad but pretty close to the best thing one can expect from the archtype). So...
Carnage Tyrant goes pretty well with Journey, so this is my current arena constructed deck, which I am calling Journey to Carnage. Not too serious. Need 2 find/finality, another vine mare and 2 more duals. I guess I would cut the branchwalkers and a either a trashing or a findbroker for vine/find if I had them, but maybe that is sacrificing too much early blocking. Probably better to cut both findbrokers and 1 thrashing. Find/Finality is insane and the 2nd best card in the deck. That said, maybe 4 would be overkill because I'm sure 2 in the opening grip is pretty bad.