What is the most popular and/or best Metal genre/band(s) TODAY?

Been getting into Metal lately and as I've been discovering bands I've
also discovered the sub genres of metal that seem to change every
generation.

Heavy Metal-Hair Metal-Glam Metal-Thrash Metal-NuMetal-Metalcore, etc.

I'm wondering, what is the most popular genre of Metal today, as well
as what are the best/most popular metal bands today?