The Peace Frog pattern is what I’m calling Granny-Ami.
It’s part Granny Square, part amigurumi, and part rag-doll.
The pattern can be worked up with any size yarn with whatever hook gives a good tight stitch for that yarn. Hook size recommendations with different yarn weights are included in the instructions.
When done in worsted weight yarn and 4mm hook, the body is approximately 4.5x4 inches (not including limbs).
Pattern is a written photo tutorial, with a couple short video links for specific parts. US crochet terms pattern is in English.