Welcome deleted user . This answer is too difficult to answer for this site given the almost limitless scope and lack of consensus on what groups are considered "Christian", so I've closed it.

This question was shut down for being "too broad/generic" and "too difficult/complicated"?

If questions and activity are shut down for "Not being the right question" then you'll have an audience of 1.

It's almost as if this is meant to become a quiz site. If I knew the answer already, then I wouldn't need to ask the question.

For the record, the link that you furbished defines for you and this site, precisely which groups are considered "Christian".
I'm not asking the question from my own perspective, but rather a better, agreed upon metric which factors out unavoidable differences such as location and language and concentrates only on measurable differences is belief.

Getting a picture why this is an extremely low traffic site. Sadly, I don't think there's any fix for it.

I encourage you to read our site scope. A question trying to quantify all Christians is too broad, but by all means ask specific questions about specified groups within Christianity. The article listing various Christian groups simply lists many of the options, but makes no judgment on who is "Christian." The site scope explicitly states, "For the purposes of this site, any group or individual that identifies as Christian is considered within our scope." Such a definition is too broad to meaningfully quantify. If someone were to undertake this, it could be an entire publication of its own.

I appreciate your welcome and your efforts to reform my knuckle-dragging ways, yet I fear it's for naught.
If the 4 questions can be asked by little ones at our Seders I thought I could manage to ask a question. I'm sorry my rambling ways offend the sensibilities of this site.

Echo chambers aren't really my thing, I'm more of a conversational model learner. I get a feel for what people know, and relish how they express themselves. Hammering out a common language is part of the fun, but when it must fit a robotic style syntax? It's really sucked the enjoyment out.

This model makes sense for "How do I fix the carburetor on a 78 Datsun Sport zz10?" but with religion? I don't need someone to teach me subjects that I can go to the library or wikipedia and learn for myself. There used to be a site, googlethatforme, and this seems to be that model. I will delete the account and you all can do business as usual.
One last note, Messianic Jews are not part of 7th Day Adventism.