You forgot FFV and VI - for shame. ><

Also there's some evidence to suggest Mateus in FFXII is actually at least partially Shiva (specifically, the 'goddess of ice' whom he captured and bound to him).

Really though, to be honest, I'm just waiting for a certain Rift-bound, trans-dimensional-hopping, four-armed, grey-skinned cocky 'weapon collector' to make his appearance in FFXIV - please, please SE, don't make him an NPC this time like FFXI!