What's nonsense because you don't understand the word "καθολικός" = "[all-]encompassing". The Nicene creed is common for all Christians. Only the sentence "we believe in one catholic and apostolic church" is sometimes replaced with sentences like "we believe in the christian church" where "christian" means the same as "καθολικός".
We Germanics were once "Arianer" =arians (not to confuse with "Arier" = aryans. In German this are totally different words). We saw in Him a hundred percent human being. But this did not change when we became Catholics. On logical reasons, which I don't like to explain now, it is impossible not to see in Jesus god. No one is really able to make a difference between Jesus and god - except he calls Jesus an impostor. And not even Muslims do so. They call Jesus a prophet.
Don't be astonished: But no one has really to believe in an own immortal soul who is a Christian, although nearly everyone is doing so. For the past I can say such a thing seems to exist because we all seem to be here since the very first moments of the universe, but whether we will continue to exist after our death I do not know. We believe in general god will call us back into a new everlasting (¿or timeless?) life with our soul and a new body made of light. And between Catholics and other Christians exists here specially the difference that many Roman Catholics are not convinced from an everlasting hell, because we are living in a limited way here on Earth - what not seems to justify a never ending punishment. We think more about a kind of cleanig fire - the so called purgatory - in which the soul (including body of light) will be finally cleaned from our last sins.
A sword is a piece of metal which is made to kill human beings. We were over long thousands of years excellent manufacturers of swords. The Japanese katana is the most famous sword in the world - but the German long sword is really doing what the myths say about the Japanese katana. Both are two hand swords - and the ways to fight with them are very different.
Everyone belongs to a tribe - and to call all people from a tribe to be "not good in their own religion" sounds to be a little racist. I'm sure it exist also very wise Saudis - but whether other people hear or like to hear what they say will be another problem.
Leadership? Hmmm ... Roman Catholics are unified under a leading servent of the servents of god who serve other Catholics. So who is our real leader? A tramp? ... Whatever. ... Fortunatelly a Trump seems not to be any leader in such a context. ...
The word catholic means UNIVERSAL.