I use the FF Gravy Lovers Beef Feast, but it's only a little over 15%, so it's just barely HC, but Jude responds well to it. I also use some of the Weruva brands which are both MC and HC (and many of them are LC). Here is a chart on our site that has some of these foods listed:
FDMB chart. You're going to be looking at the first column, the % calories from carbs. There is another chart that I also like:
Andrew Hall's CKD Food List. Again, you're looking at the "carbs % of cals" (third column over). This list is updated regularly, and it has the added benefit of including phosphorous % content. Cats with kidney disease (CKD) need to avoid foods with high phosphorous content, but high phosphorous isn't good for any cat, really. And by the way, FF pates are high in phosphorous.
Sometimes, what I will do is combine Jude's LC with a HC food, which sort of ends up making a MC. I do this depending on his numbers and how much I want to manipulate the number.
Those babies are adorable!! Your tabby reminds me of Jude!