I am trying to make bolognese kosher for my family and struggling. Here is the list of ingredients I hope to find a substitute for:   Pork Pancetta Heavy cream Milk Parmigiano Reggiano  
There are many bolognese variations out there, some which have milk in them, but there are many which do not as well. My understanding is that a traditional bolognese does not have milk, but as always with Italian food what's traditional is what Mama makes. In any case, you can drop the milk products without substituting anything for them. I don't think that adding soya or anything else will give you the same effect.   As for the pork you can replace it with ground beef or turkey, beef has more flavor than turkey but turkey is generally leaner. I make bolognese with a mix of beef and turkey because I find it's less greasy while still flavorful, but that's subjective. Pancetta adds richness, but is not essential.   Some people, myself included, use bacon in a bolognese. If you want a substitute for that there are turkey bacons out there in some places but to be honest the ones I've tried generally haven't been very good substitutes for the real thing. Bacon has fat, salt and smoke flavors (presuming it's smoked), so you could try and substitute any kosher cured and smoked meat sliced into thin strips. You could just leave it out entirely as well.  