I would guess those to be Cat E but I don't know..[circling with Concorde
....
it is important to remember [for example] that even if the approach speed is slower then the minimum for a category-i.e at low weights---you still must use the certified landing category.
i.e if the MD-11 is light and the actual speed is below CAT E--you still must use CAT-E minimums---
and with the MD-11 I think that it competes with the SR71 in terms of Vref---it's a CAT F ship...
