Care to share which Muslim majority nations are favouring who??
Your example however was limited to one:
Lets see here.
UAE/SA vs. Iran.
UAE/SA vs. Qatar.
Turkey vs. Egypt
Turkey with some tension with UAE.
I won't touch Syria. (super convoluted)
I won't mention Yemen as well.
These are just a brief list that comes to mind.
I address UAE/SA v Iran for one major reason.
Zooming out, the primary driver in the recent tensions IMO is Israel.
Its not a coincidence that Trump's first foreign visit was to SA.
Kushner is Netanyahoo's in to the WH and thus American policy.
This is all implementation of Israeli security needs.
Muslims will be muslims and focus on the short term and personal interests.
And Arabs will be Arabs and fight amognst each other and then make up and fight again.
Israel is the coolest calmest customer in the middle east and has the US in her hand.
While we muslims squabble with each other, there is ONLY ONE winner in any scenario that leads to escalation.
Israel.