dude we get it you love mito
If I may offer a different perspective: the set running on Drop is, well, already running. While Stonks is in IC. GMK lead times being what they are, if you want to get your keycaps as soon as possible (and cheap at that) MiTo's set is the sensible choice here. I feel sorry for OP investing time and energy and money into this project only to be undercut by a different designer but that's the way it is.
I don't personally care for MiTo but to reiterate this set is not a deeply personal lightning strike of inspiration but rather a safe, tried-and-tested design, and as such was up for grabs. MiTo has sway so they got there first, simple as that.
On a sidenote, this entire discussion is weirdly apropos the set's theme.