Sima Zhao is using a de-cloned sword and Shi is using the Thunderclap sword from the DW7 dlc. In DW7 Empires they gave the DLC weapons to some characters.
Gan Ning - Flail
Pang De - Mace
Huang Gai - Arm blade
Ding Feng - Ring blade
Cao Ren - Buckler blade
Zhu Rong - Boomerang
Da Xiao - Pugil Sticks
Sima Shi - Thunderclap Sword
Xu Huang - Great Axe
Yue Ying - Dagger-Axe
Dong Zhuo - Bombs
Although, I do not believe they gave someone the short pike. If you played WO3 some of the changes were all ready made (i.e. DZ with the bombs and Pang De with the Mace)
I'm unsure of the characters that still share movesets with the generics like Sun Quan/Sword generic, Xu Zhu/Club generic, Xiao Qiao/Fan generic etc... (maybe they get unique charge attacks a la WO3, who knows)
But all in all, there are still 4 characters that need to be decloned, and like Juju said: 1 wep still needs to be assigned to a char:
Rapier: Liu Shan and Yuan Shao
My guess is that Yuan will get the new weapon, as his rapier moveset was altered for WO3. Might be a similar sword like the DW5/DW6 one (dragon tongue like)
Spear: Ma Chao and Jiang Wei
Since most chars are getting their DW5 weapons back, it's possible that Jiang Wei will receive his trident again.
Wizard Staff: Pang Tong and Zhang Jiao
Zhang Jiao was already shown with the staff, so I think Pang will be decloned for this one.
Feather Fan: Zhuge Liang and Zhuge Dan
Pretty obvious, Zhuge Dan will get decloned >.>
Short Pike: no one yet
If they give this weapon to one of the chars that still need to be decloned, it'll be either Ma Chao or Jiang Wei as it is a more warrior-esque moveset. Ofc, it might be given to a new char as well...