Anyone who is below 25 currently will be his contemporary.
Amongst those, Alireza and Duda are certainly top-5/10 level players and not going anywhere.
Keymer and Gukesh are almost certainly going to be 2750+ players.
Decent chance Wei Yi does a Ding Loren and becomes a steady 2750+ once he finishes his studies.
Likes of Ergaisi, Esipenko and Maghsoodloo also have shown more potential than Pragg of reaching steady 2750+ level.
And then you still have the likes of Niemann, Abdusattorov, Nihal, Sindarov who all have shown better results in OTB chess than Pragg.