New Family Tree

I checked, this is my large rotational save that has a lot of intermarrying, my cousin married your sister kind of thing. Here is what I have discovered:

• The more confusing the intermarried ones are, the trickier it can be to follow all the lines correctly; otherwise, it shows everything. I even had one infant on the same tree, like the child is its own second cousin once removed or something like that.
• There are grand uncles and aunts
• Spouses to aunts and uncles are gender-neutral as relatives-in-law; the same goes for cousins, spouses, and first cousins once removed, as far as I could tell. This might be a cultural thing. I call my aunts and uncles' spouses "aunt" and "uncle," depending on their gender preference, and the spouses of first cousins "cousins."
• Family by marriage, further out, are distant in-laws, including spouses of grand aunts and uncles.
• A parent's cousin and a cousin's child show the first-cousin one-removed step.
• Second cousins and beyond are distant relatives, but you can easily check their parents: If one of their parents is the original parent's cousin (i.e., both that sim and the other sim have parents who are cousins), then they are second cousins. If both parents are distant cousins, you are looking at either a second cousin, a more distant cousin (like third or fourth, and maybe throw in some removals), or a first cousin more than once removed.
• Familial relationships will be displayed over marriage relationships. Example in my game:
  • One guy woohooes a girl, but leaves when she "accidentally" gets pregnant because he wants to focus on his acting career, not on kids (he is self-absorbed). We will call him Boy 1
  • The guy's cousin is a childhood BFF of the girl, and he helps comfort her; eventually, they fall in love and get married. We will call this Boy 2
  • Boy 1's son shows the half-sibling relationship with his sister (the closest family relationship).
  • Boy 1's son refers to his stepdad as "paren'ts cousin" instead of "stepdad" because his stepdad is his dad's cousin.

This is all I've found so far. Has Anyone else found anything of note? I still need to check the profiles of some of the parents' cousins, distant relatives, etc to see if they show up there. If so, I can get rid of some of my custom labels, but not the ones that say "second cousin"!