Here's Choose Your Own Catsock Adventure - a mix-n-match collection of eight cat-scattered sock patterns with lots of heel and toe options to help you get your perfect - and perfectly-fitting - catsocks.
The socks are all worked top-down, and come with instructions for short-row, flap and gusset and afterthought heels, wedge, round and colourwork toes.
There are four sizes, from 15.5cm to 22.25cm foot circumferences, with guidance for getting the perfect fit and for making longer and shorter socks.
This is the download version - you can get a physical copy here.