NG+ update: Finally started. Ran with Moonveil at first, then double Moonveils, then Wing of Astel for a bit, then MLGS which I'm gonna stick with now.
Beat the starting zone boss, then Magma Wyrm for Moonveil, Castle Morne boss, Margit, Godrick, Loretta, Tree Sentinel, and Rennala. Also took out gaol bosses every time I saw one. Nothing has been remotely as hard as in NG, either because I'm overleveled, or because I'm just better, IDK.
There's one exception: Rennala. Much harder than in NG, took me 3 tries. It was GREAT. In the first run, I went there way overleveled since I missed Raya Lucaria for so long, and the fight was easy. This time it felt like a Bloodborne match. Was an awesome time. I'm glad I got to experience that fight more like it was intended.
Looks like NG+ enemy stats catch up to NG endgame somewhere between Godrick and Rennala.
Only things I have left for the platinum are Frenzied Flame ending and Lichdragon Fortissax. Anything I need to look out for so I don't mess those up? I think the Lichdragon is part of a questline so I'll have to be sure I do whatever that is, while the ending is just like...go through a door after Mohg in the sewers, so that one should be easy enough if I'm understanding it right.