I'm gonna leave this post up in the interests of fairness because they're not well signposted - but technically this is offtopic for this community and thus against the rules. You might better off posting on !mechanicalkeyboards@lemmy.world. hopefully this community can still be helpful to you in this instance but in time we'll probably want to remove posts like this.

Unfortunately, there aren't many options in the 60%+ range.

Cepstrum (sp?) From keebio is the most recent one I know of, but it's a split. There's the Chocolate Bar, mt-choc and Pete (of ZMK fame) is working on WarDriver - a choc minivan - but it hasn't been released yet.

edits: links and typofixes

When you say without the ergo split thing, are you looking for something that’s “row staggered” like Keeb.io’s new Cepstrum? https://keeb.io/collections/cepstrum/products/cepstrum-keyboard-pre-built It’s a more traditional 65% build, but still split.

Or are you just looking for something Corne-like and ergo, but as a unibody build? The Reviung41 LP rings some bells. https://mkultra.click/reviung41-lp-low-profile-keyboard-kit/

How much like the corne do you want it to be?

Like, one piece but with a small separation in the left/right sides?

https://github.com/beekeeb/zerosprey42

Like a normal keyboard but split?

https://keeb.io/products/cepstrum-choc-low-profile-65-65xt-split-staggered-keyboard

Some other thing entirely?

Also, how DIY do you want to get?

I know you’re interested in using Kailh choc sunsets but if it’s really just the low profile factor and not the ergo-split part you’re interested in, have you considered any of the low profile options from Keychron? They make both a 65% and 75% low profile board: Keychron K7 Pro (65%)

I’ve heard that their banana and mint low profile switches are quite nice and very tactile.

One place to start looking is in the source code of the QMK firmware. They have subfolders for many keybaords, and most of them have a picture. https://github.com/qmk/qmk_firmware/tree/master/keyboards Most of them are hobby projects though, so soldering will be required.

Just an idea: you could attach the two halves of a split keyboard to a wooden board. The piantor is a corne-like split with hot-swap choc v1 sockets that has been designed to keep soldering to a minimum. Some soldering still required though.

Do anyone have feedback on this?

https://chosfox.com/products/chosfox-l75-keyboard-kit?variant=42798174732482

Looks promising