Quick plug for the LTK266D-SL. I think it's lighter than most of the options here, and approaches the TCL SL in terms of overall weight. The bike has a good climbing geometry, and the factory claims that they tried to replicate the stiffness and handling of the TCR.
It also looks like a full-size run should be available soon. At 680g (bare, size M), it's a competitive weight compared to second-tier big-brand frames like the Scott Addict RC, comparable to the best Chinese brands, and the price is pretty good. You can also get it as the Permeants ST-09, which is on sale on AliExpress right now, though I personally can't vouch for buying this frame from AliExpress sellers.
I tried to curate the useful information in the first post on this page:
https://chinertown.com/index.php/topic,6158.0.htmlThings to know: this build can get expensive because it is best to buy the frame and source your own headset, bars, etc, as LTK doesn't offer any good bar options.