Let me answer the easy question first. MaP ratings are pretty much meaningless now days. Most early low flow toilets performed so poorly that this rating was important, but today it think all toilets meet or exceed the minimum 500 MaP requirement. Now the harder question. I frankly don't know what manufacturers, if any, have a listing of distance from bowl rim to water. The water "spot" is the size of the water surface which is determined by the internal height of the trap weir, and while that my have relevance to you question, it doesn't really answer it. Toto toilets all flush extremely well, so any model in the Toto line would be satisfactory from that standpoint. ADA rated toilets must be elongate. Universal height are basically the same as ADA except the flush handles on ADA tanks can be purchased either left or right sides. One thing you need to know is the rough in size(s). To get this, measure from the finished wall to a flange bolt. Toilets come in 3 rough-in sizes. 10', 12", and 14", but all will fit in less space than their rated size. Unfortunately, there is no industry standard on exactly how much space is needed, but if you are within an inch or even a tad more you will usually be OK, but if you get a measurement of more than that, check back here. Since 12" is the standard rough in, you will find more choices with that size. Toto has some options available if you have a 10" or 14" rough in.