But actually ... of the things you listed, some we don't share with Catholics, and for very important reasons.
Catholics have the Catechism yes, everything codified. Orthodoxy doesn't. We learn the faith as we are preparing to be received into the Church, but it's not a matter of piles of doctrines - our aorta he ultimately is much more focused on practice and in many cases we oppose trying to explain some things that God has not revealed and the scholastic approach that leads Catholics to develop doctrine. We are very opposed to that approach in fact. So yes, it takes time and preparation to be received, but not at all for the same reasons.
Other than the dogmas of the Church and some doctrines if we ask, the priest isn't there to tell us what to do or believe. He's there as a helper when we need him. Our priest pushes us out of the "nest" when we become members and makes it very clear that it is OUR responsibility to seek truth, to seek God. I don't know if Catholic priest's are different or not, but that's not how we do things.
Nothing is for sale in our foyer (narthex?) ... we do have candles to light, and donations can be made for them. There is a parish bookstore but to be honest - it doesn't see a lot of business. Most people never buy anything. It's run by the women's charitable association. The Church itself sells nothing at all.
Language is interesting. Orthodoxy has always held it as important to have the Liturgy in the language of the people. At times we have developed alphabets and have always brought words and concepts with missions to accomplish this. The US is a unique situation because except for Alaska, Orthodoxy did not come here as a mission but with immigrants - often fleeing their counties of origin. So the language of the people was wherever they came from. Catholicism by contrast seems to hold Latin in regard as some kind of sacred language and has its services in that language (sometimes) just for that reason. That is completely opposite Orthodox thinking.
We are actually opposed to statues for Scriptural and spiritual reasons, and while Catholics have in some cases adopted icons, we are actually opposed in this too. They like realism in paintings and realistic statues - our icons are deliberately non-realistic, again for theological reasons.
Yes, we both have ordained priests, we both use incense in the services, we both practice Holy Communion based on ancient beliefs, we both have ornate houses of worship, and so on. There are those superficial similarities, but that is because those aspects of worship go back into Christian and Jewish antiquity and are reflected in Scripture.
I do understand that Protestants who don't know the details might not recognize a difference. Honestly, folks in my parish (mostly Orthodox immigrants) wouldn't be able to tell the difference between the last Vineyard fellowship I went to and the last Assembly of God.
But just because you can't see it or don't understand it, doesn't mean there aren't differences. And you're only describing rather superficial things. The REAL differences are in how we see God, and man, and sin, and salvation. When we have such differences as that, it's a pretty serious thing.
It's not really a question of how various Eastern Orthodox differ. We are essentially the same and in communion with one another. But we see the western Roman Catholics as very different.
Regarding the OP, the schisms within Orthodoxy are generally limited and seem to be over matters other than doctrine - often ecclesiastical procedures.
Of course none of this may matter to you. And if that's so, that's ok.
I am clarifying partly to prevent general misunderstandings.
God be with you.
