Ragdoll diet, is there such a thing?

I have a half ragdoll half Siamese kitten almost 5 months old. Or, this is the best I can tell from his physique, coloring, and the way he goes limp when we pick him up.
I have read that it is bad to follow feeding guidelines on packages for ragdolls b/c they have special needs-- namely that they grow faster than other breeds and need access to as much food as they'll eat as a kitten.
Some canned food labels say this for any kitten: As much as they'll eat 3-4 times a day.
Boba is a healthy weight and so far I have pretty much given him as much food as he can eat, leaving kibble in his bowl (especially some at night) and I also feed him some wet. I do take note of how much he eats each day.
It seems to me that bc of his ragdoll physique, Boba can't be judged for weight like most cats. I check his ribs and make sure they are easy to feel but his belly has been soooo round ever since we brought him home at 8 weeks(I thought it was a bad case of worms, but no it's just how he is). So no, when you run your hands back from his ribs, he doesn't get skinnier towards the tail.
So, for you ragdoll owners, have you heard this to be true, too? That they need full access to food constantly? That they have big bellies? I've let his bowl go empty for a few hrs as of late bc his appetite has really picked up and I don't want him to eat way too much.

All kittens under a year should be fed as much as they'll eat. They're growing a lot in a short amount of time! You can feed him wet several times a day and supplement with dry while you're not home if that's easier.

Kittens will look "round" but they lean out eventually. They're going from kitten to adolescent stage quickly and need the extra calories. Kittens eat WAY more than adults. I would not worry about overfeeding at his age.

Good to know! He has really had as much as he wants but I wanted to be sure I wasn't reinforcing a bad eating habit. As a fellow foodie, I can definitely jump on the "eat up" train.
I've had kittens with my family growing up, and Boba is definitely a different shape from any kitty I've seen before. I will see if I can get a good picture of it. My brother in law told me he was just fat, but I know a fat cat when I see one.

I agree with everything that @Paiger8 says about kittens and their roundness. I wouldn't worry much about overfeeding Boba, either, unless he really starts ballooning!

That said, as the caretaker of a snowshoe mix, it's good that you're taking note of his body shape now. As an adult, Edwina's a little round, too, unlike Ireland, her very sleek and long lynx mix sister, and Edwina's fluffier than Ireland, too, so Edwina has a tendency to look heavier. Beyond that, Edwina's a little squishy! (I've had an overweight cat before but even she wasn't squishy like Edwina.) Even the vet tech was surprised at the squishiness but the vets looked at me like I was crazy when I asked, on two separate occasions, if she was overweight. Edwina's very active and she's a big eater who's always asking for food, though I'm not convinced that means she's hungry. She was skinny and horribly underfed when we adopted her in late 2013 so I think she has a very ingrained food insecurity.

I think the two things that keep Edwina from getting overweight are feeding her an all-wet (part raw, part canned), very low-carb diet and feeding five small meals a day at fairly set times. I work at home so it's easy to feed a meal plan like that but even if you can only do three set meals a day (morning, home from work, bedtime) that's a good start.

Back to your original question about specific diets for a ragdoll or Siamese... Our vet highly recommended feeding an all-wet, grain-free, low-carb diet because she said Siamese and Siamese mixes have a tendency toward digestive issues. Ours do have sensitive stomachs: Edwina can't eat potato and she vomits if her stomach gets too empty, which is another reason we feed the cats so many small meals!

Boba's very cute and his white paws remind me of Edwina's. Here's Edwina. (She hates being photographed and moves whenever any sort of device is pointed at her!)

Edwina is adorable and I love her name!somebody suggested that Boba might be part snowshoe instead of ragdoll. It just seems crazy to me that he have any strong pedigree in him bc I've only ever known tabbies and Maine coon mixes.
Someone literally dropped him off at our apartment for free and I'm constantly amazed we have such a beautiful kitty running around. How are we so lucky? Haha
Right now Boba is eating a mix of blue buffalo kitten kibble and a high quality grain free food (which I plan to switch from bc it is a salmon and sweet potato formula, but it has solid nutrients) for his dry, and I've been feeding him 2-3 times a day high quality wet food. A raw food diet really isn't in our budget but I do make sure he gets good food. It does seem that his eating habits fluctuate. One day his food with dry is constantly emptied, other days he hardly touches it until night time. I assume it has to do with his energy output and the canned food as I switch it up and maybe some varieties are more filling than others. Anyway, the cats I grew up with were always free fed, dry food only and they were healthy but it's been fun to do the canned food. I like finding a food that he just gobbles up.

Yes, our cats' food intake fluctuates a lot, too, depending on how active they are and which foods they're eating. It's great that you're feeding Boba canned food multiple times a day, particularly since you're giving him a variety of good foods.

As for raw food prices, our two get Primal and Rad Cat, which actually work out to be around the same price per meal (or per "fill up" as I think of it!) as a lot of the canned foods we feed. (They're definitely cheaper than Tiki, for example!) That, though, is partly because we're very lucky to have stores nearby that have pretty low prices on the raw foods -- the prices can vary a lot. (Loyalty points at one store help, too!) Best of all, even a small meal of Rad Cat seems to keep them surprisingly happy for a long, long time. I know, though, that there are tons of reasons raw food doesn't work for every cat or every person.

Edwina got her name at the shelter where we adopted her: they'd just given it to her so she didn't really recognize it, but it fit so perfectly that there was no way we would change it. Ireland's name fits her well, too, so we kept hers as well. How amazing that you got Boba like that, he's a beautiful cat! I still can't believe how lucky we were to find Edwina and Ireland at the shelter like we did: apparently a lot of people had asked about them, though they'd only been there for a few days, but the shelter wanted a quiet household for them because they seemed shy. They are anything but shy now but they do fit in really well, with us working at home so much!