WoTC has hired John Hight, formerly of Blizzard, as President of Wizards of the Coast. Professor DM analyzes the potential impact on D&D. "You will own nothing, and you will be happy"
As someone who doesn't particularly like Pathfinder (it's too D&D for my tastes), even I'll say that Pathfinder 2e is the best version of D&D there has ever been, taking literally every single good idea D&D has ever had and refining it, while doing as much as possible to fix and paper over every bad idea that anything trying to be D&D is stuck with for legacy reasons. I don't understand how anyone can just be like "nah I'll stick with D&D" when they have an alternative that's literally just D&D but actually functional and decent.
If you want to move away from 5e, but remain in a heroic fantasy:
Pathfinder 2e is flat out better than 5e at being D&D. However, it's got much less of the rules ambiguity that plagues 5e. This can be both good and bad: it's good because there's a lower cognitive load for the gamemaster, it's bad because there's a higher cognitive load for players to remember their mechanics. A more even division, but some groups will be reticent to switch just because it's not 5e.
Dungeon World is 5e if you went the complete other way and ditched the crunch rules for narrative ones. Faster to learn and pick up but not for players who enjoy tactical play. Member of an entire genre of games on the same "engine", Powered By The Apocalypse, which gives us Blades in the Dark, the best heisting RPG, and Monster of the Week, a top tier urban fantasy RPG in the vein of X-Files and Buffy the Vampire Slayer. Learning any of these qualifies a group to play all of them with far less friction.
Songbirds is D&D stripped of its noxious past. Proudly queer, a heroic, not necessarily medieval fantasy setting. Takes what's best of D&D into a lighter RPG that's more narratively strong but still provides some tactical play.
ICON, an in-development, open play test heroic fantasy RPG in the New Weird genre. By the same people as LANCER, the best tactical Mecha RPG out there. Tom Bloom, its designer, also has Maleghast, GUN, Broken Worlds, Goblin With A Fat Ass, and more, spanning genres.
There's also a few games coming out that are just 5e with a hat on, made by prominent creators in response to last year's license controversy. Desiring to move away from dependency on WotC, we now have Kobold Press's Tales of the Valiant, and Matt Colville's MCDM RPG.
I am obssessed with PF2e and feel compelled to jump to it's defence against your incredibly minor criticism: The higher cognitive load for players is there, but I would say that there are 2 mitigating factors. Firstly, the rules have an underlying mechanical unity that makes new rules easy to understand once you've gotten used to the basics, and secondly, the lower cognitive load for the gamemaster actually makes it a lot easier for them to support the players in learning the rules through play.
I think the real issue for PF2e is that in being the best D&D it does actually require tactical combat, so can be very frustrating for more casual players who just want do a lot of damage rather than thinking about debuffs and positioning. Shadow of the Demon Lord/Weird Wizard nicely fits the niche between PF2e and DW that 5e should occupy, with a balance of narrative and crunch to its combat.
There's plenty to critique about the game in its own right, such as spells being balanced around mostly failing, which doesn't feel great, and the weirdly large number of plant person species to choose from instead of enhancing existing species with more options, but those are all internal criticisms that don't really apply when making an external comparison to 5e. If comparing to 5e all you really need to do is describe how it'll play differently for the players, and in my experience players aren't usually 100% open to learning a new system if there's any friction in doing so.
Apocalypse (based on my experience playing monster of the week) has some awkwardness due to how rules light it is (maybe 4 pages? Super light) , but after getting over the awkward part it's super fun.
I'd definitely recommend it to a group looking for more casual sessions or to introduce people to role playing, it really gives the players a lot of room to play.
D&D will be just an enshittified version of itself in the future anyways. Never played it myself but I’ve been very involved with video games based on DND.
Also Basic Fantasy is free to download. Books are like $8 or something on Amazon. I run it a lot because I can't stand breaking the flow to look up tables or Feats or abilities. Just the fundamentals there, and you can buy a book for each player if you want without going broke. Or they can download everything for free...