Everyone has aura but the aura we are talking about or prefer to see, I think there is need to make a distinction between one having it as defining personality traits and one showing it occassionally.
If we go by defining personality traits which manifest in their talks and actions, then Mihawk, Shanks, Akainu, Kuzan, Kiz, Zoro, Whitebeard, Law, Doflamingo, Katakuri, King, Vergo and obviously for me above all - Xebec.
If we go by occasional manifestation of this aura we like - Luffy, Sanji, Green Bull and so on. Even Teach as of now comes under this category.