You have 4 of 4 known Fairchild Channel F (TOSEC-v0.1_CM) sets

videocart 1 - tic-tac-toe-shooting gallery-doodle-quadradoodle (fairchild)(1976)
videocart 2 - shooting gallery-desert fox (fairchild)(1976)
videocart 4 - spitfire (fairchild)(1976)
videocart 6 - math quiz (fairchild)(1976)