Not hereditary, but SCOTUS functions somewhat worse than the House Of Lords: unelected, unremovable, life appointments, but ability to change the law. Hence the decades spent shifting the balance to reverse Roe v Wade.

A lot of important US freedoms only came from the courts in spite of the legislatures, which I think is an under appreciated problem of the system.

The US system skews much older for some reason too. The only president born after 1946 was Obama. Like being stuck in a time warp.