Need a toilet with 10” rough in but 19” high where to get?do they make custom toilets?

10" rough in toilets are not that hard to find. 19" high toilets will be. ADA height is 17-19 but the closest I could find is 18"

Kohler K-3889-0 Highline Comfort Height 1.28 gpf Toilet, 10-inch Rough-In, White $450.

Why not just an elevated seat? Those are easy to find.

Inexpensive Solution: You can get 10" rough toilet, 17" high + get high rise ADA seat. The seat itself is about 2"-3" tall. That will give you overall height of 19"+ ....

Expensive Solution: if you don't mind paying plumber to do some plumbing work under your house, then you can install Geberit concealed wall frame and Geberit wall-mounted toilet. Toilet can be installed at any height you want. Rough in dimension doesn't apply here ( toilet doesn't sit on the floor, but hangs on the wall )

Hope that helps

Milo