I think that's real interesting. I really like to see family relationships laid out like that. So, what do you get with yours? You know, of course, but just saying:
Your parents are Lookalikes so not a lot conflict there, probably pretty peaceful and stable growing up
Your sister is Illusionary with you so you probably get along pretty well, and enjoy time with her, you just have had to separate herself from you when she tries you "make you normal" sometimes. LOL.
You and your Dad are Activity so probably very positive. It also explains your helpful insights about SLIs!
Your Mom is your Benefactor which is not an unusual position for a parent, so, not bad.
Your brother is your Supervisor. He probably gets annoyed with you, or at least feels he knows better than you sometimes! Its your worst relationship in the family. However, with an otherwise peaceful home environment maybe this is fine, particularly if you do not have to cooperate constantly. As the only son, perhaps he is more off-to-himself anyway.
How do you see the "Supervisor/Supervisee - Auditor/Audited - Revisor/revisee" working in your relationship with him?
I have a friend I really like and admire, an INTJ, so she is my Supervisor and I feel I keep waiting for her to get exasperated with me!