Who is The Phelan heirs from The Testament and what is their importance?

The most significant Phelan heir was Rachel Lane. She was gifted the majority of her father's estate, which she then folded into a charitable trust. The others included Troy Junoir (TJ), Rex, Libbigail, Mary Ross, Geena, Rocky, and Ramble. Each of his children (excluding Rachel) eventually received an inheritance although they had to contest Troy's will to receive it.