I bought a pair of the Jim Greene African ranger composite toes as work boots. I’ve been pretty happy. I imagine the standard rangers are better, but there’s not many, if any options, for zero drop safety toe boots.
They breathe like normal leather boots. They have decent support, as to be expected from ankle height leather boots. The sole flexes. Not as much as a vivo barefoot, but not as stiff as your standard full leather boots with a sole.