There isn't one single Best Men's Leather Jacket, as the best choice depends on your style and needs. Here are some of the most popular styles to consider:

Bomber Jacket: This is a versatile style that can be dressed up or down. It's typically short and has a ribbed waistband and cuffs.

Biker Jacket: This classic style is known for its asymmetrical zip closure, belted waist, and lapels. It's a great choice for a rugged look.

Cafe Racer Jacket: This minimalist jacket is inspired by motorcycle jackets. It has a clean-cut design with a stand-up collar and angled zip closure.

Double Rider Jacket: This is a heavier-duty biker jacket with a double zip closure. It's a good option for colder weather.

Trucker jacket: This is a denim jacket style recreated with leather. Trucker jackets feature a boxy fit, pointed collar, and multiple pockets at the chest and waist.

Flight jacket: Also known as a bomber jacket, this style is typically inspired by military flight jackets. It features a relaxed fit, ribbed cuffs and waistband, and a front zip closure.

Field jacket: This jacket is inspired by military surplus styles. It features a longer length than most leather jackets, a stand-up collar, and multiple pockets.

There are many other variations on these styles, so you're sure to find one that suits your taste. The number of leather jacket types can vary depending on how specific you get with sub-styles, but these are some of the main categories.