I'm another that tends to stick to the same brand of kibble while feeding different brands of canned food.
I feed Fromm kibble and switch between a few of the flavors and do so with every new bag of food.
I feed canned food as a topper and switch brands nearly every new can. I've used Taste of the Wild, Blue, Blue Wilderness, Wellness, PureBalance, Natural Balance, Merrick, Newman's Own, and I'm sure a few others.
I switch things up to give him variety, and to hopefully keep him from developing any more food sensitivities since he's sensitive to chicken and I suspect fish.