Old Classic Films on Spanish Blu-rays (Bootlegs?) Picture Quality and Menus

[Allnamestaken]

Do the Spanish Blu-rays of older classic Films generally have menus before the movie starts or do the films start directly. And how is the picture quality? I've read, that many seem to be bootlegs.

I mean Blu-rays for films like "In A Lonely, Place", "The Furies", "Ryan's Daughter", "A Passage To India", "Angels With Dirty Faces", "Mildred Pierce", "The Miracle Worker", "Jane Eyre (1943)" and "The Night Of The Hunter" and "A Farewell To Arms (Gary Cooper)"

Is there a way to determine, what Blu-rays are bootlegs?