Beneficial or not?
The yellow caterpillar is the larva of Apatelodes torrefacta, or Spotted Apatelodes Moth. Found on ashes, maples, oaks, Prunus species, and other trees, but not a pest species.
The green caterpillar is the larva of the Pandorus Sphinx moth, Eumorpha pandorus (Hübner, 1821).
Found on Grape (Vitis), ampelopsis (Ampelopsis), and Virginia creeper (Parthenocissus). Not a pest.
The spider is a Spiny backed orb weaver (Gasteracantha cancriformis). It is beneficial in that it eats insects.