he is Sky blue Clear Flight pied, Grey wing - the grey wing
I don't see Spangle - the grey wing is a different in markings then "normal"
here are 2 of my Grey wings One "normal / not pied of any kind" one is Clear Flight pied like yours
The female (green grey wing) is the "normal" marking the male is a cobalt Clear wing pied grey wing (he may be another mutation as well that was never set in stone - but because of his Lack of wing markings it is thought he may be Double Factor Dominate pied Grey wing)
if you need a clearer pic of Belle (green grey wing female) I can see if i have one