I don't think of Judism or Catholicism or Protestism when I see the 10 Commandments. I don't worship the 10 Commandments, I worship the God who wrote them. In an of themselves, the 10 Commandments are not a religion.
You're confusing denomination with religion. The first 4 commandments apply to the worship of solely the God of Abraham. They're not applicable to Buddhists, Taoists, Shintoists etc etc.
Just got the mental image of someone worshiping the ten commandments, and this cracked me up. I would opine that reading the ten commandements, as any part of God's Word, is a form of worship.