The Leupold Prismatic is essentially a fixed magnification 1x scope. It has all the same limitations as any other scope. It has limited eye relief (though still good when compared to a scope), a defined exit pupil, and requires a consistent cheek weld in order to use it.
Essentially, it is the same as the Leupold CQT; but without the option to increase magnification.
I personally don't have much use for it myself since I am sacrificing a lot of what makes close-range sights useful; and at the same time I am not gaining anything (like the ability to increase magnification).
Your next two sights are both red dot/reflex style sights. That means they project the reticle onto the lens so you can have unlimited eye-relief and no-parrallax. This means you can be very fast as well as use some unconventional positions, inconsistent cheek weld, etc. It also means if the sight dies, no reticle.
The Trijicon RMR appears to be an updated version of the Reflex. The problem I always had with the old Reflex is that it adjusts reticle brightness based on ambient light and uses an amber reticle. In practical use, this means when you shoot from a dark area to a target in a brightly lit area (underneath a covered firing line, from a house to outside, inside a dark structure with a weaponlight activated), the reticle either disappears or becomes hard to see.
The reticle dims because the area around you is dark; but the target is brightly lit (and usually by amber light to boot), so the faintly lit reticle blends in nicely against the brighter background.
Now that only applied to the Reflex. I don't know if it still applies to the RMR; but considering the dark blue tint on the RMR (which is what the Reflex also used to help make the reticle more visible), I would guess the RMR has the same issue to some degree. I do note the RMR you are looking at is LED powered instead of tritium/fiber optic and uses a red reticle as well, so it may well be a different story in that case.
Aimpoint T-1: Aimpoint reliability and a 50k hour battery life in an 84gram package. A lot to like here.
Out of the three choices you mention, I would definitely go with the T1.
