Metatron Jeanne ~= Tiamat ~= Other Divine Spirits They've Met is a fun one to play with given the sort of shit Tiamat scales up with. Obviously, total equals would be an asinine assertion, but it sounds good enough to say on most occasions that "a fight between them would at least be interesting" because the stats need to be ballpark
About time that this build up for Mash got paid off. She's a character I wish I still had the time to make respect thread type shit for. The amount of content to sift through at this point would dwarf any post I could make for Artoria or Gilgamesh though. And both afformentioned characters are frankly incomplete given I only covered a fraction of Nasuverse overall.