Most commonly used other paw symbol ?

Hi , so I have this small series that explains Alterhuman identities and I decided I wanted to do otherpaw next ! ( yes I'm aware that otherpaw ISNT being alterhuman , but my series it so help people understand the difference between each term , so I thought it might be good to do ! ) Anyways , I'm rambling- I was just wondering what the most commonly used otherpaw symbol is , since I've seen a few .