yes those look to be bantams, I have a friend who is a wyandotte breeder, his look just like that. I go to his farm and it amazes me how good his are! my blues are from him. Here is the link
https://www.backyardchickens.com/forum/viewtopic.php?id=293571
https://www.backyardchickens.com/forum/viewtopic.php?id=293571