Just to give you an idea, here's a chart with some common feeders. I prefer dubia's greatly, due to them being more nutritious, hardly smell at all, terrible escape artist, grow very slowy, and live considerably longer than most feeders:
Species Moisture % Protein % Fat % Ash %
Dubia Roach 61% 36% 7% 2%
Crickets 74% 18% 6% 1%
Silkworm 76% 64% 10% 7.50%
Phoenixworm N/A 17% 9.50% N/A
Superworm 59% 20% 16% 1%
Waxworm 61% 16% 11% 1%
I don't think this chart is going to look as pretty after I submit this as it does typed out but hopefully you'll get the general idea lol