Where are the GOOD modern bands? Any chance they can be classics?

I'm a bit older.. let's just say I was a teen when Megadeth released Peace sells and when Metallica released master of puppets. Now I absolutely love thrash. Some bands I consider classics are Megadeth Metallica Slayer Exodus Anthrax and even Pantera to some extent... These bands are amazing and I can almost guarantee people into thrash will be listening to them even 20 years from now. My question is this.... Where are the GOOD MODERN BANDS! I've been out of the loop for awhile. I pretty much just listen to 80s and 90s thrash. I got Spotify now and I want to find some new music. I found a few pretty good bands like Havok Municipal Waste Terrifier things like that. Now they are good but none of them capture the magic of older thrash bands in my opinion. What I mean by this is I doubt any of these bands will reach the popularity of the older classic bands. I can't picture someone listening to Havok in 2040... I feel like these bands are good but don't have the staying power. Not sure if I'm explaining it well. In other words what modern bands today are the equivalent of Slayer Megadeth Exodus etc.....