They remind me of North Star fantasy miniatures for Frost Grave games. The sprue layout is virtually identical, as are the differing heads, chests, arms, and lower torso's.
In fantasy, we have so much freedom: we can press into fantasy service most historical figures for a made-up army. Back in the dark ages of the 1970's, when I was a boy, 20 years before I got into miniatures gaming, it was common practice to use different scales of figures for different, non-human races, painted appropriately, of course. Now, we are spoiled for genuine fantasy choices, sculpted appropriately.
I still keep an eye open for amazing historical figures I can use. My Human armies (yes, Virginia, plural) are already too many. Such figures as these, however, are always tempting…
I am a huge fan of North Star's Gnolls boxed sets -- I bought three boxes of them? They were so much fun to assemble: I turned their heads, like dogs do sometimes, when they look at you, as if to say, "Huh?!?!?" I laughed as I worked, as they were so comical to look at. I laughed even more as I painted them. These Human Knights offer similar opportunities to customize their poses, and that is a real treasure in building these models. Enjoy! Cheers!