First, the horses. From the left
Legio Heroica, Essex, Mirliton, Black Hat, Alain Touller.
The Touller horses have been redesigned since I bought mine and I haven't seen them.
Again, from the left
Legio Heroica, Essex, Mirliton, Black Hat, Touller
The Black Hat knights aren't quite as versatile as their infantry, being noticeably smaller than other ranges. The Legio figures are a bit taller but it is their bulk which makes them stand out next to other figures. Their shields are just about identical in size to the ones from Mirliton though a little thicker. The Mirliton figure is one of the later ones in this range. Some of the earlier ones are a little smaller though not so much that it couldn't be natural variation. The Essex figure is one of their Spanish range wearing obsolete gear for the mid- to late-13th century.
From some pictures I've seen elsewhere, the Old Glory 'Crusader' range is a pretty good match for size and build of the Mirliton figures. Most of this range carry heater shields more typical of the mid 13th century than the 3rd Crusade. The ones in the 'Holy Order' range have larger shields which are of an earlier form though still more early 13th than late 12th century. The range seems to have a mix of early 13th century 'face mask' helms and mid century full helms. Both of these were found earlier, but full helms in particular seem to have been extremely uncommon pre-1200 and not predominant for another generation or more. The Old Glory figures also have most of the knights on barded horses which were probably uncommon before 1200.
I've used Mirliton figures for my Italians as well as French and German forces which are in progress. I used Touller figures for the Spanish. My current project is a Feudal English army of roughly the time of Simon de Montfort. I've had the urge for a while to paint a few figures bearing the arms of the nobility who held lands close to where I live. I've found even more information than I hoped and so now I shall do a whole army. About a dozen figures done so far so watch this space.