We have quite a few, but they are only down the road from us so have known them a long time.
They tend to be big 15mm - mostly towards 18mm - and the ranges vary quite a bit, depending on when they were first sculpted. Single sculptor who started in 25mm, so his early stuff is noticeably different to his more recent stuff.
His first 15mm were pirates (small range) followed by some of the ancients, his most recent are the Samurai.
Most of the medieval fit into the middle of his sculpting.
Luckily he believes in putting lots of pictures on his website.
You'll notice that some figures appear in several different lists.
He originally worked with eg WRG army lists, so "medieval peasant with spear" might get listed amongst Scottish, Welsh, French, or Hussite. The clue is in the figure codes.
If the knights are a little bit bigger or beefier than your lower orders, that's fine - they eat more so have grown bigger, but if they are in a separate unit it may not be too noticeable.
Horses vary in size, some are tiny ponies (I have some horse archers that look great as Tartars) others are huge.
Cavalry are one piece castings, so no gluing riders onto mounts.
His pack camels look really good if you are looking at Crusader objectives.
One real bonus though - he has a January sale every year, usually starts late December (sometimes Christmas Eve) and runs until the end of January (or early February just before Vapnartak show), and his January sale is usually 25% off all ranges. So if you are thinking of eg Hussite wagons, put them on your Christmas list, order in January, and collect at Vapnartak in York to save postage.