I have several that I use:
- Dillon Spray Lube (also available rebranded as Cabala's for $1 cheaper)
- Kiwi Mink Oil
- Castor Oil
The spray lube works great for .30 Carbines brass, but I haven't tried it on bottleneck cartridges yet.
I think the castor oil might be my favorite. Someday I may try dissolving it in denatured alcohol and spraying it on.
I've also tried talcum powder as an inside-neck-lube. Haven't made up my mind about that one; it works, but any trace of oil that gets on the neck can mix with it in the sizing die and cause massive shoulder dents.