Stanton Sherpa and Cotic Solaris are both worthy shouts, but you’ll have to up your budget slightly.
Does seem there’s a glut of 29er HT’s all designed around 140mm travel forks now with incredibly burly tube profiles, and there’s still a number of nice frames designed around a 100mm fork with racier angles and shorter reaches. There’s almost nothing I can find with what most people now refer to as “trail” geometry (for want of a better term for it) with slacker head angles, longer reaches etc. But designed around a mid travel fork (ie. 120mm or so) and not stupidly burly…
It’s why, as z1ppy suggests above, I bought a Whyte 629 and upgraded it, couldn’t find anything else with the correct combination of geometry and weight that I wanted. There’s a definite market out there for someone to bring out a sub £500 29er frame only, sub 2kg frame weight, designed around a 120mm fork with short(ish) stays, slack(ish) head angle, but with proper reach figures to allow the use of 50mm stems and seat tubes short enough (with internal routing) to take advantage of the new breed of 150mm drop posts on the market. Stanton and Cotic come admirably close, but IMO the BB height on both is 10-15mm taller than ideal and being steel they’re giving away 1lb or so against an equivalent ally frame.
FWIW my heavily upgraded Whyte 629 is damned good. The only thing I’d have preferred is to be able to buy it as a frame only. Well that and 5-10mm off the chainstays and stealth dropper routing would be rather nice too!