Mecheon
Sacabambaspis
Sorcerer though I reckon will stay around, as sorcerer is a direct result of wizard not being a generic spellcaster and failing at encapsulating common tropesNevertheless, it is an important part of D&D lore.
Unlike sorcerer.
As long as Wizard is the bookish spellcaster doing spells by book nerd, the sorcerer will continue to have a niche as the thematic power of "Born with untapped magical potential" is a big one.
Frankly though, that would apply to most classes. The current Fighter is nothing like a 1E fighter, where's the followers or the bend bars bonuses? The Barbarian is the best its every been, by pointedly ignoring everything about how its been portrayed in previous editions and instead by being a good class this time aroundBig issue with Psionics is that, yes, it was in every Edition...but each time was entirely different from every other time. Even 3.5 was a pretty major overhaul compared to the Core Classses. There simply isn't a "classic" to rally around.