Just built my first ortholinear keyboard!
Keyboard/case: Ortho60v2 from #cannonkeys (https://cannonkeys.com/products/ortho60)
Switches: #akko Rose Red (https://en.akkogear.com/product/akko-cs-rose-red-switch/)
Keycaps: Custom order from #kromekeycaps (https://www.kromekeycaps.com/)
The only reason most keyboards are not ortholinear is because of tradition and typewriters.