Betta three - Anal is too long, dorsal too rounded, dorsal should be facing more outwards, ventrals souls be wider, and thicker, uneven ray branching, spoon head. A genetic deformity that could lead to a curved spine in fry
Betta four - long anal, uneven ray branching, short body, spoon head. A genetic deformity that could lead to a curved spine in fry, rounded dorsal, dorsal should be more forward facing
Betta five - dorsal should be facing more outward, anal too long, ventrals too skinny, dorsal too rounded
I would pick male number 4