Now , I will create kamen rider tier list for Zi-O
Zi-O >>> Tier : [Base]
8-B Varies or Higher with Rider Armor | [Decade Armor]
High 6-C , Higher with Final Form Time (Comparible to Base Decade) | [Zi-O II]
At least 7-A (Get Ap from Saikyo Girade as well , I should put "At least" because this form should likely surpassed base Decade and Destroy Another Rider with ignoring its condition) | [Zi-O Trinity]
At least High 7-A (Get Combined Ap from Trio) | [Grand Zi-O]
Likely High 4-C (He wield the power of 20 Heisei Kamen Riders that should surpass Kuuga and Decade)
Geiz >>> Tier : [Base]
8-B Varies or Higher with Rider Armor | [Geiz Revive]
At least 7-A (Can traded blow with Zi-O II)
Both Speed : In Their Base form , Both get
Subsonic. At Post Decade's appearance and After Geiz get his Revive form. They get
Subsonic+ movement Speed with Massively Hypersonic+ Reaction Speed
Black Woz >>> Tier :[Untransformed]
LIkely High 8-C (Can push Another Fourze's punch away from his king) | [Kamen Rider Woz]
At least 8-B , 8-A via Futuring Kikai (Comparible to Zi-O and Geiz , Including Kikai who has power to lift a maximum of 360 tons)
White Woz get Unknown tier via his future note which can manipulate future events and can possibly happen but something is not such as he cannot manipulate future which possibly defeat Another Ryoga.
Other Future Rider
Shinobi and
Quiz get
High 8-C and
Kikai get
8-A , Ginga is unknown.
I wait until he will debut.