Kinboats Ashigaru Swordsman-this isnt something you will see on the battlefield, those sandles arent made for combat he will trip before he runs. and Ashigaru wouldnt be armed with a sword, they are low ranking they would have a yari.
Kinboats Chin Swordsman-It is a good replacement but only for 1700s-1900s
Wangshuis Buzu-I have only seen this unit once I dont remember using it, so I wont comment on it
Kinboats Otomo Swordsman- well he has a katana worn like edo period style, 1000 years after the Otomos and well this is what an Otomo swordsman looks like
http://shiromanga.datamachine.net/civ/Early Japanese Swordsman.htm
Utahjazz7s Bushi- Well, He doesnt look like anything seen on the battlefield of medievil Japan
Bebros Tiger Warrior-Never heard of it, but Im not an expert on Chinese history so I dont know
CamJHs Shaolin Monk- Its a good unit, but its not a chinese replacement for a swordsman
Utahjazz7s East Asian Swordsman-Its probably the best replacement but its one of his first units so the animation is that good
Kinboats Bushi?- thats not a sword its a Naginata. Its more like a spear with a longer cruved blade.
Kinboats Kensai- Not something your going to see on the battlefield. It Reminds me of Miyamoto Musashi, the unit looks like him in his vagabond days. It would be a good Ronin unit.
So you see how much we need(I want ^ ^;

an Ancient/Early East Asian swordsman
Note:Im not making fun of these units, sorry if I offended ><