Dpeends what your after, but a second hand NEC multisync, which has an ST slot https://www.sharpnecdisplays.eu/p/download/cp/Products/Optio...

but that might be a bit too basic. because its basically a monitor with 100% duty cycle and a PC.

I did this. Got a new old stock unit for 300GBP, its got a SDM slot for gen8 Intel systems and Pi compute boards.