I am a family historian in my fourth decade of researching, and most of the memorials I have created or manage are for ancestors and members of my widely extended family. About one in six are of either siblings or of direct relatives, though a slightly larger number are of more distant ancestors. The remaining two-thirds of the memorials I manage are for more distant relatives and their spouses, plus a few memorials for old friends of mine who had not yet been placed on FindAGrave.
I have a special memorial here for my goddaughter, Anastasia WitbolsFeugen, and the domain at which I keep my email ("Stasia.org") is where her real memorial is.
I am grateful to all who visit these memorials, read their stories, and leave mementos for them. Should you find some of your own family among these, I am willing to transfer, as we're probably related anyway.