Many future nominations will depend on how the committee evolves after the current old guard steps down. Remember that the current head, John Sykes, and Rick Krim are Baby Boomers. Even the cool guy and younger voices like Questlove, Tom Morello, and Dave Grohl have all reached or are close to 60 years old. What a "young" committee.
There could be different directions the committee goes in, depending on the makeup of the next reassembled committee. They could simply become a "Pop Hall of Fame" and focus on inducting the biggest names possible. Then bands like Maroon 5 would get inducted, and later we might even see acts like Imagine Dragons and OneRepublic enter the RRHOF (which I don't like). They could also become more hipster, more like another version of Pitchfork. In that case, someone like Jeff Buckley's chances would be 100 times higher 10 years from now. If so, bands like LCD Soundsystem would certainly be seriously considered. I guess new committee will be in the middle ground of these two.
Allison Hagendorf is a good addition to the current Rock Hall committee. She is the former Global Head of Rock at Spotify. More importantly, she is only 46 years old, so the alternative rock explosion of the 1990s happened during her youth, meaning she understands the trends and their importance. Her taste leans more toward the mainstream rock bands of the 90s, though, rather than the more "underground" ones like Pixies or Pavement.
We will also see what happens after the old guards are gone. It is possible that new voters will apply different standards to rock candidates, placing more value on critical acclaim (influence on later musicians and genres, artistic impact...), than on popularity. We will definitely have cases like Arcade Fire vs. Avril Lavigne or The Strokes vs. Maroon 5, and then we'll see whether popularity or acclaim wins in the future.
Cocteau Twins are kind of act that is becoming more and more important as time goes on.
Big Gen Z acts like Billie Ellish, The Marias, Chappell Roan all praise or cite them as influence... Even the Weeknd cited them as influence
Beach House and lots of indie rock, bedroom pop acts, all can trace back to Cocteau Twins.
Probably it is still 10-15 years away from them being inductable candidate, but could see their name getting hotter every passing year.
They are no longer a no ID band, the number their month listeners in Spotify is more than famous rock bands likes of Styx, Guess Who, Meat Loaf... And their listeners will become larger and larger in the future...