YSK: Cats don't like their whiskers touching their food bowl. This is why they beg even if food is still left at the bottom.
Whisker fatigue causes stress and overstimulates their senses. Using a flat bowl or plate will relieve this issue and allow your cat to eat all their food without stress.
You can also search for "whisker fatigue" bowls specifically made for cats.
This is called whisker fatigue. Try to pick food bowls designed to alleviate this. You'll want a design that's wide and shallow. https://www.amazon.com/gp/product/B08L97TF8S/ref=ppx_yo_dt_b_asin_title_o00_s00
I ordered these last year and my baby boy will happily finish his food to the very bottom of the bowl. If your cat's eating from their usual bowl just fine, then you don't need to go out of your way to get them special bowls or anything. Every kitty is different and has different needs!