Cogshall has been somewhat dwarf. Diamond and Peach Cobbler may be in that category as well.
I have grown two peach cobbler trees. The first one grew like a weed, but Ian took that one away. I planted a replacement and that one is also a fast grower. Pretty sure it turns into a pretty large tree.
From trees that I've grown Pickering, Dwarf Hawaiian, Ice Cream and Honey Kiss seem to be the smallest.
I did see Squam say that sometimes Honey Kiss is not dwarf, the two I bought grafted were both very slow growers. I grew one from seed and that one seems average. I also met someone a couple of weeks ago that said it was slow then just shot up last year and became a fast grower. It was maybe 15' tall when I saw it. Weird.
Also, my pickerings didn't have many fruit this year thanks to some pruning by me, followed by Ian shredding it. It's put on a lot of size this spring. Seems to grow at an average rate without fruit. Lots of flushes but compact, maybe 6-8" each time it pushes. When it fruits though (its unusual it didnt) its loaded and that slows it to a crawl. I have one side of the tree 2 feet shorter than the other, just because it had fruit on that branch. So, yeah you can manage it with pruning but I would not say pickering is just a dwarf tree. Walter Zill has the original tree in his yard and its at least 25 or 30 feet tall though its 30+ years old. My gut tells me it will outgrow a pot eventually, so go big with it. Its a fantastic mango.