Roronoa Zoro (Three Swords Style)

Brook (Fencing Style)

Dracule Mihawk (Yoru & Kogatana)

Gol D. Roger

Kuina (Wado Ichimonji)

Vista (Two Swords Style)

Koshiro

Shanks (Sabre)

Cabaji (Carnival Tricks)

Johnny

Yosaku

Hatchan (Six Swords Style)

Arlong (Kiribachi)

Genzo

Tashigi (Shigure)

Ippon-Matsu (Sword-shop owner)

Pell

Dorry

Chaka

Sarkies (Big-Knife)

Pickles

Bogart

T-Bone

Wanze (Ramen Kenpo Ura Hiden: Men-Kiri Doku Bocho)

Mozu and Kiwi

Kaku (Four Swords Style)

Ryuma

Lola

Jigoro

Shiki (Oto and Kogarashi; used as prosthetic legs)

Doctor Indigo (supported with Chemical Juggling)

Trafalgar Law (Nodachi; In conjunction with his Devil Fruit powers)

X Drake

Killer

Silvers Rayleigh

Shiliew

Momonga (Supported with Rokushiki)

Onigumo (Eight Swords Style)

Strawberry

Doberman

Yamakaji

John Giant

Comil

Stainless

Doma

McGuy (electrical sword)

Squard (giant sword)

Thatch

Atmos

Fossa (flaming sword)

Haruta

Blenheim

Little Oars Jr.

Elmy

Ramba

A.O

Delacuaji

Bizarre

Islewan

Karma

Palms

Albion

Lip Doughty

Gyro

Hyouzou (Eight Swords Style)

Gekko Moriah (Detachable scissors; Used in conjunction with his Devil Fruit powers)

Basil Hawkins

Bobbin

Kin'emon (Kitsunebi-ryu)

Sharinguru (in lieu of his Devil Fruit powers)

Fisher Tiger
There's plenty of Swordsmen lol what are you talking about...