ZSA's moonlander[0] or their planck-ez[1] are a couple of examples. Where standard keyboards have staggered rows, the planck-ez is "ortholinear", and the moonlander has staggered columns. (I have seen designs which are symmetric and retain staggered rows, too).

Though I think older keyboards in this category would be like the Maltron, Kinesis Advantage. And also recently, there's been a surge in custom mechanical keyboard designs, like the Sofle keyboard[2].

[0]: https://www.zsa.io/moonlander/

[1]: https://www.zsa.io/planck/

[2]: https://github.com/josefadamcik/SofleKeyboard