I think Maen is interesting, the ultra-thins they are using in the 37, 39 and now 40 sizes in both automatic and manual wound LJP calibers for under 1500 USD.
Rpaige, probably more on the independent side is turning out some interesting one-off stuff. Crosses into the vintage space when you look at some of the repurposed cases he's using. Bonus is that you can easily wind up with items that are in effect a piece unique due to the nature of the customization although it's not common to speak of the watches this way.
I'm increasingly focusing on discovering the collaboration projects myself. While not strictly about your 10k price cap, looking at who the independent makers are that have "downmarket" brands for the enthusiasts. (example: Andreas Strehler has his "Strehler" brand now). Going down this rabbit hole let me to Lyrique (which has been discussed here and above your price cap) but also the newer small private projects under the Montres Feu de Sable name that will have high horological value done purely for love of the art.
We live in a golden age!