Fever333 has a RATM thing going on that you might like. I got into some of the stoner/doom stuff out of my love for Soundgarden, there's plenty to find if you like that Sabbath-y heavy riff sound. Some of the old alt bands are still kicking: Obv Pearl Jam is still doing it, and they still cut a great album, The Pixies, QOTSA, Afghan Whigs, Built to Spill, Weezer, all released good albums in the last few years. You might also like some stuff that hits some alt rock feelings like Blancmange, The Rentals, Wunderhorse, Paolo Nutini, King Gizzard and the Lizard Wizard, Wet Leg, Ty Segall.

Some of the bands and solo artist spin offs of the big rock acts in the early 2000s have continued to write killer tunes - Tom Morello, Jack White, Black Keys, Son Volt, Night Beats.

Maybe that's enough of a start?