Some Sims Not Showing Up Married In Family Tree or Relationship Panel

I got a headache trying to follow your Sims A through F explanation, and I don't know why your married Sims don't appear as married in their family tree, sorry, but I can tell you that the part you mentioned about them having full friendship and romance bars is irrelevant. Those meters have nothing to do with family connections and the family tree. Either your Sims are married or they aren't, regardless of where the bars are sitting at. The tree only reflects blood relationships, marital relationships and in-laws, nothing else.