Yes in terms of the stiffness and support, I’ve got all sorts of ankle and knee problems from rugby and basically need a sole with little flex and a fairly high ankle support.
Don’t get hung up on the idea that having a high ankle will offer you support. Grab any pair of “high” walking boots, and you’ll find that the top bit is actually pretty mobile. If it were rigid enough to stop you turning your ankle, you wouldn’t be able to move it! Most of the support for your ankle comes from the heel cup, and this should be the thing to pay attention to.
I’m currently using a pair of Mammut Cliff boots, and am really happy with them. They’re a kind of mid-height boot, and are a good couple of cms shorter than the Raichle Mt Peaks that I never got on with. Both were rated to take walking crampons on, so possibly worth a look.
The thing to remember though is that no two peoples feet are exactly the same. If you want the boots that fit your feet the best, go and try some on at the end of the day, with the socks you intend to use, at a reputable gear shop, with trained staff who offer a boot fitting service.