Truman Boots is another option.
Oak Street or New England Outerwear? I don't have personal experience with those however.
I found my camp mocs in 9.5B to be much smaller than my boat shoes in the same size. The camp mocs I had to force my feet into and eventually stretched out over time but the boat shoe are much wider around the heel and I found a tad longer as well. I cant speak to the buckaroo though.