I own many. Here they are in order of wearings (as of late).
Caleche (EdP and Pure Parfum). I have waxed poetic about Caleche in a separate thread. It may be my favorite perfume. I now have 5 or 6 bottles from various vintages/eras.
Cedre Sambac: My favorite Nagel. I have been wearing it a lot recently and have found the dry down to remind me of leather in some ways. On some days this is indolic and on other days its more naphthalene.
Equipage: My favorite masculine. The rosewood and bergamot in this are beautiful. I agree with Cheapimitation that it takes on a bit of a leather nuance.
Santal Massoia: My fave JCE.
Cuir d'Ange: My other fave JCE
Eau d'Hermes: A Rudnitska masterpiece. Even the modern iteration is great.
Bel Ami: quite a dark, spicy fragrance. I too pick up little (if any) leather in this fragrance.
Muguet Porcelain: a more challenging one for me.
Osmanthe Yunnan: meh
Terre d'Hermes: Sold it
My next Hermes will likely be Galop d'Hermes. The leather note in that is also quite gorgeous.