Maimonides places the ishim last of the ten ranks in the Mishneh Torah, Hilchot Yesodei HaTorah 2:7, and the Golden Dawn table assigns them to Malkuth, the tenth sephirah, the kingdom, which stands for the world as it is and is the only sephirah with nothing beneath it.
This is the pairing in the whole table that most looks designed. The lowest rank of angels, named from the word for a man, set at the sphere of the material world: the fit is close enough that it is easy to read intention into it. The mechanism is the same as everywhere else in the table, two ten-item sequences laid side by side in their own order, and the fit at the bottom is as much a product of counting as the awkward pairings higher up. What is true, and worth separating from the coincidence, is that both lists were built with a descent in mind, so their lower ends were always likely to agree.
Malkuth's position also explains why this rank carries a practical weight the others do not. In systems that use the Tree of Life for anything at all, Malkuth is where a person stands, and the rank paired with it is therefore the one a person is understood to encounter. That is a claim of the modern ceremonial synthesis rather than of Maimonides, who is describing degrees of intellect and not a route of contact, and the two should not be read into each other.