Not necessarily your favorites, but the books that every fantasy and science fiction fan should read to be a well-read fan, the way that Dune, the Hitchhikers Guide to the Galaxy, Stranger in a Strange Land and Lord of the Rings were among the books that "everyone" who liked fantasy and science fiction was expected to have read in the late 20th century.
We probably need a few more years to adequately answer this question. The books you mentioned have all stood the test of time and become classics in the field; we don't (yet) know what among books of the 21st century will be considered classics in another few decades.
That said, we do know which define the field as it currently stands. Any such list really needs to go back to the 20th century and
at least scoop up Harry Potter and Game of Thrones, but as far as published in the 21st century, here are a few that come to mind (in order of year published; and yes, I'm cheating slightly and going back to 2000):
China Mieville: Perdido Street Station (2000)
Alastair Reynolds: Revelation Space (2000)
Neil Gaiman: American Gods (2001)
Susanna Clarke: Jonathan Strange & Mister Norrell (2004)
Peter Watts: Blindsight (2006)
John Abercrombie: The Blade Itself (2006)
Naomi Novik: Her Majesty's Dragon (2006)
Scott Lynch: Lies of Locke Lamora (2006)
Patrick Rothfuss: Name of the Wind (2007)
Suzanne Collins: Catching Fire - Hunger Games (2009)
Nnedi Okorafor: Who Fears Death (2010)
Brandon Sanderson: Way of Kings (2010)
Cixin Liu: Three Body Problem (2014)
Jeff Vandermeer: Southern Reach trilogy (2014)
NK Jemisin: The Broken Earth series (2015-17)
Marlon James: Black Leopard, Red Wolf (2019)
Note that this is not meant to be a list of the "best of" 21st century SFF, just ones that (I think) have had a large impact on the field, that is, "set the tone." Nor is it meant to be comprehensive - just a sampling of books that I think are important to at least be aware of, if not read.
I don't know the young adult field all that well, but you'd probably need to include some of those, especially "teen dystopias," as they've had a big impact. I did include Hunger Games as a placeholder.