My experience, from cheap basses to very expensive (US PRS, for example) is that many bigger manufacturers err on the side of caution (and speed) when it comes to nuts and leave them far higher than they ought to be.
Alembic and Warwick, to their credit, come with adjustable nuts which are easy to adjust to taste.
Bacchus and Sadowsky come with nuts which have actually been addressed by somebody who knows what they're doing and gives a sheeeeeet. I'm sure there are more, but can only comment on ones I have experienced first hand.