When you are identifying a match, I see these options, and not sure of the distinctions and when one is better than the other.
Unknown is self explanatory
Someone in my tree. OK, I have a BIG tree, so if they are a 6th cousin and in my tree, I use this? Or do I only use it for direct line?
Descendant of a couple in my tree. OK, I’m guessing that is maybe someone whose ancestors are in my tree but I never developed that line? So if granduncle line is just a stub and I find someone descended from that person, I use this selectioon?
In the family line of someone in my tree - OK, how is that different from the above?
If these are explained someplace I’ve missed it and I may be tagging people wrong as a result so an explanation of what they mean and when they’d be the right selection to use would be appreciated. Pointers always welcome.