James Wellbeloved is very good, we used to give Megan that.
My dogs are on Burns. runningdog
Mine are just changing onto CSJ but it's only gradual as I still have some of their former food left.
What question are you actually trying to ask ?
Do you want to know about brands of food, or are you trying to ask advise on swapping from puppy/ junior /adult food ?
Or do you wish to know about treats, as in rawhide / chews / bones etc, things that will help to keep your dog occupied ?