Albums like Crack the Skye

My friend told me I should check this album out. „Mastodon?” I said. „Never heard of them.”Holy shit. I must have by now listened to it over 20 times in the short space of time since then. The Czar is already no.1 of my past 6 months of songs. Now, can anyone recommend any similar albums? What I loved about this album was the sparing use of vocals and the tuned down guitar playing extremely complex riffs (see: Escape part of The Czar). As well as that, I love the heavenly vocals combined with the simple power chords which occur on some parts (see: Martyr part of The Czar, chorus of Crack the Skye). I’m not a fan of screaming at all, and only very sparing growling (like how on this album, it’s only used on Crack the Skye, and even then not all the vocals are growly). Can anyone help me out here? Thanks!