They are not rice weevils. The photo on the top left resembles the Saw toothed grain beetle, Oryzaephilus. Saw toothed beetles are dark brown and have a row of saw-like sharp teeth on each side of the prothroax. They are secondary pests and larvae and adults feed on broken grains.

Details are needed on size and colour and close-up photo of antennae, elytra and thorax.

The others are Tribolium sp.