Where are you? Here in the Midwest, I have seen a handful of personal Macbooks (mostly sales guys, who also can be seen with Surfaces/iPads) but all the engineers have Thinkpads, Latitudes, or ZBooks.
Midwest here, too. It's Macbooks all the way most any place under three-digit headcount. Or agencies, no matter the size. Larger places seem to favor Windows laptops where possible (all but iOS dev) because they're usually using MS collab and comm tools, plus (I assume) enterprise management with them is easier and/or finding Windows enterprise install base managers is easier.
I think I've seen someone running Linux on their work machine, like, once, in... 18 years? Twice if I count me, in the first half of my career.
I'm in Melbourne, Australia. When I'm at larger enterprise sites there'll be more Windows devices but like the other reply to you said most of the agencies I've ever been to are MacBooks all the way along.
I think I've seen someone running Linux on their work machine, like, once, in... 18 years? Twice if I count me, in the first half of my career.