These are oddities or voluntary variants released by Mithril for their regular counterparts
the variant has a stand up horse leg instead of a recurved one. Check MW337 entry for more detail
regular version on the left, variant version on the right. Check MW337 entry for more detail
the variant has a different kind of shield. Check MX436 entry for more detail
regular version on the right, variant version on the left. Check MX436 entry for more detail
the variant has a sword in his right hand instead of a standard in the regular version. Check MX463 entry for more detail