Huh, I've only ever heard of MST in the context of too-high-res displays o_0 Never heard of raw DP supporting daisy chaining, I thought only Thunderbolt does that.
Thunderbol/USB C use displayport signal to drive monitors. I have a apple "thunderbolt" display which happily runs from laptops that don't do thunderbolt.
Dell makes some Displayport monitors which support daisy chaining.