I think this is person dependant. A Kale salad makes almost no impact on my hunger, but a piece of bread makes me feel pretty full.
Just as an example of an opposite experience.
(american, vegetarian for 13 years, athletic, former meat eater, long carb centric diet that i'm trying to change)
Well, if you've ever cooked down a cabbage or spinach or whatever, you'll see it basically takes up no space whatsoever... so yeah, kale on its own will take a while to fill you up.
This is very true, and something that people pushing keto (myself included) had to learn the hard way.
There are satiety indexes for different foods but they are not universal. I can eat almost unlimited carbs and never feel full. I'll eat multiple plates full of bread or a thousand calories in french fries and then move on to the main course.
6oz of lean meat and some salad and I'm good with 500 or so calories on my plate.
I honestly don't get how potatoes supposedly fill people up. I have made twice baked potatoes before and eaten an easy 2000 calories of them along side thanksgiving dinner.
In contrast right now I'm eating clean and doing a body recomp. Eating clean is super satiating, for me at least!