Upvote:2
The Chi-Ro symbol dates back to 312 AD when Constantine had a vision, and was told to fight under that symbol at the Battle of Milvan Bridge. It is truly "catholic" in the sense that it is universal to all of Christianity. [You may have heard of a city in Egypt that the Copts named after this symbol ;) ]
IHS is also fairly common- I've seen that in Baptist churches and Anglican ones. I believe that is supposed to be the Greek form of Jesus but I don't know. (maybe someone should ask!)
The last one is just a coat of arms for The Episcopal Church, much like the emblem of the Holy See.
Upvote:2
I suspect most Protestant denominations in America and Europe have some sort of official logo. For example:
Southern Baptists
Christian & Missionary Alliance
Evangelical Lutheran Church of America
United Methodists
Etc etc. I'm sure we could list hundreds.
Upvote:2
I would not be surprised if every church had some form of logo. Here are the ones I know:
Lutheran cross:
ELCA
Papal flag:
Episcopal
(American) Anglican
Baptist
Methodist
Orthodox (and Eastern Catholic)
Russian Orthodox (foot goes opposite way)
Upvote:2
For good measure, the Church of England (Anglican Church - i.e. what Episcopalians diverged from):