Historically, SCOTUS justices have a habit of not turning out exactly the way their nominating president had hoped.
This is only partially true. With the exception of Byron White, essentially ALL of the justices appointed by Democratic presidents in the last few decades have been reliably anti-constitutional, whereas numerous justices appointed by Republican presidents have been toxic. Besides Souter, there has been John Paul Stevens (Ford), Warren Burger (Nixon), Earl Warren(Eisenhower). Besides White, has there been even one justice in the last half century nominated by a Democratic president who did not reside in the SCOTUS' liberal wing?