My father's tree has one outlier: my paternal grandfather, Clifford Lutter (1915-1980), was born in Pennsylvania. This was because his father, Howard Lutter (1889-1959), a musician, was performing in Philadelphia at this time. Their usual residence was Newark, Essex County, New Jersey.
My mother's tree is more challenging. By the time we go five generations back, we are not in the United States. I listed her paternal grandparents as born in Slovakia. The area of origin is within the current borders of the country of Slovakia. They were from central Europe where governmental control and political borders changed often. They spoke German.
Previous ideas for focused family trees were:
Causes of Death
You can use this type of family tree format for any feature you would like to showcase, such as number of children or place of death.