[What about just add in raw honey since it contains yeast as well. Pollen that stores in cell also added with honey by bees...]
I try to avoid feeding honey in pollen patties.
This is largely due to the fact that I likely feeding more then the original colony the honey came from.
While the 'donor' colony may not have shown signs of disease, the receiving colony may have more stress and so the disease may surface.
I try to keep all feedings to be table sugar, that assures I am not spreading disease by feeding.
This does prevent all disease, as robbing or any stress at anytime can cause problems.
As for yeasts...
I would not use bakers yeast, I would find a local source of brewers yeast, as your money will go much farther. There are subtle differences even in brewers yeasts, but none to be concerned about.
Honey for yeasts
While honey does have some yeasts and active bacteria in it, it not on a usable scale for the quantity of pollen supplement you are likely making. Keep in mind that these bacteria are added to pollen in a hive where it is 90+ degrees for many days. Unless you plan to incubate your pollen patties, you are not going to get the same results. There are other conditions that must be met for the bacteria to work in the way you are thinking. This is not a reasonable option. Also consider hive-to-hive disease spread.
You may feed the most expensive yeasts with the highest protein, but unless it balances with other aspects of the diet, it is just getting crapped out the other end. Bees do not have an overly diverse digestive system. In order to get nutrition from proteins, there must be adequate amino acids. This is an involved topic for another thread altogether. Amino acids can come from a variety of sources, and some argue what is needed, what is used, where they come from, what is priced for your scale of operation, etc. etc. etc. This is a topic of argument that has been raging since before some of us were born.
Some current sources of research are suggesting the adding of lipids (fats). These fats have shown to reduce some infections like nosema. It has also shown that it leads to an improved immune system (however slight the honeybee has of one). Some have said increased fat bodies will also induce more foraging for pollen (when available) and in turn, more pollen means more food for brood, and more brood equals a larger population (and likely a healthier hive). In light of this information, some recipes are including canola oil. This oil also helps with the handling of the patties (less sticky).