This is a reference that I sometimes use as a quick guide if I'm out and about or in a hurry. As with all research, I'd use multiple sources, but this should help with sizing food for your corals.
For the P,T, and VS feeding category I use a simple phytoplankton paste mixed with some frozen mysis or brine shrimp. The other ones (not including the photosynthetic-only) I use mainly frozen mysis, brine, and table shrimp. To feed these I add about a cup of tank water to a plastic cup or container, add the food and let it thaw out for about 5 minutes before feeding.
To feed SPS just give each coral a quick squirt of the food mix. Softies and zoas are about the same. LPS just try to get the food on their tentacles or soft tissues near their mouth(s). I also like to stop the flow for about 5-10 minutes during and after feeding corals just to allow them to feed and get as much food as they can before the flow carries any residual free-floating food away.
Dosing is a completely different issue. Feeding provides for supplemental nutrients and energy for the corals' metabolic processes and growth. Dosing provides the elements/nutrients that are used for growth. So basically, yes dosing is still necessary.