it all depends on how deep you want to go into baits, i would suggest that to start simple would be the way to go for a start with baits containing semolna,soya flour (i like to use full fat ) and fish meals,i dont think there are any baits out there that do not contain semo or soya or both,they are good ingredients to use as a base and add whatever you fancy to them , shrimp meal is a good additive but if you use to much your baits will float,hemaglobin is also good it will darken your baits and make them harder,i am sure that if you look on the web you will find recipes for baits to start you off that you will be able to addapt to what you need, one thing id sure making your own will be a lot cheaper than buying readymade baits that cost a fortune and often catch more anglers than fish, many years ago (when i had hair ) i got into the technical side of baits in a big way and was always searching for the magic ingredient which of course does not exist,during this period i think my catches dropped because i was relying more on bait than my angling knowledge i finaly realised this and went back to more simple baits that i knew worked and forgot mostly about messing about with baits to much unless it was just to tweek a bait to suit the water i was fishing ie lighter baits for silty waters i still use simple recipes today and still catch my fair share,good luck with your prebaiting and bait making.
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