Here is the current status of the pineapple rooting in water. I initially had it in way too much water, which caused some of the bottom leaves to begin rotting (not rooting). I peeled them off, washed the plant well, and put it in a much smaller jar with water only covering the bottom nub part where the roots were coming out. It is doing much better and should be ready for planting in soil in a week or so.
The mango seed has obviously sprouted and started putting out roots. I'm not ready to dig it out of the damp peat moss yet for planting, but probably will check on it this weekend.