FALLON LOCKHEART
Shadowhunter and you're a Lightwood, even though your family is the rival Shadowhunter family to hers, she loves you anyway.
ISABELLE LIGHTWOOD
Some sort of Downworlder (You choose) and you're not related to anyone, but you're close with Simon and Clary.
ALEC LIGHTWOOD
Shadowhunter cause who doesn't like tradition, but you're Fallon's younger sibling. He was wary of you at first, until you proved your loyalty to your sister and her parabatai.
ARIAN LOCKHEART
You're a Warlock, Magnus's sibling to be specific. The Lockheart Family was obviously pure Shadowhunter, but due to the change of the new generation, Arian changed as well to benefit what he wanted, not what is parent wanted.