Hi, those are all wonderful plants and those spotted patterns on those Aloes are really great, but I would like to point out that trying to ID Aloes by their spots, spot patterns and leaf shape is a very difficult undertaking as their are very many spotted Aloes with similar leaf shapes, and especially leaf shape can be dependent on growing conditions. Before I would put a name on a NOID spotted Aloe, I would certainly want to see the shape and size of the inflorescence and the flowers, which tends to be more definitive than spot patterns and/or leaf shapes. A. zebrina has a very different inflorescence and flower than A. maculata. So for the plant in the first picture, I would suggest waiting for it to flower before making a definitive decision on its name.
