from the first official VCT match until today
https://www.vlr.gg/3548/vac-kimchi-vs-reborn-clan-battle-act-2-1-ro16
so then re-born clan battle is the unofficial world champions
next match:
https://www.vlr.gg/3540/reborn-vs-vision-strikers-clan-battle-act-2-1-qf
so, Vision Strikers is the new Unofficial world champion
2021:
re-born clan battle: OCT-06 until OCT-06
Vision Strikers: OCT-06 until APR-15
F4Q: APR-15 until APR-29
DAMWON Gaming: APR-29 until MAY-02
NUTURN: MAY-02 until MAY-28
SENTINELS: MAY-28 until JUL-09
XSET: JUL-09 until JUL-11
SENTINELS: JUL-11 until SEP-15
G2: SEP-15 until SEP-18 (0-13 XDDD)
GAMBIT: SEP-18 until NOV-04
LDN UTD: NOV-04 until NOV-05
TENSTAR: NOV-05 until NOV-06
TEAM LIQUID: NOV-06 until DEC-11
ACEND: DEC-11 until FEB-18-2022
(All 2021 Masters/Champions winners were also unofficial WC at the time they won) (SEN, GMB, ACE)
2022:
GUILD: FEB-18 until MAR-13
G2: MAR-13 until MAR-22
TEAM LIQUID: MAR-22 until MAR-23
FUNPLUS PHOENIX: MAR-23 until MAY-14 (this means OPTIC wasn't unofficial WC at the time they won Masters Reykjavik)
FNATIC: MAY-14 until JUL-17
PAPER REX: JUL-17 until JUL-24
FUNPLUS PHOENIX: JUL-24 until SEP-05
XSET: SEP-05 until SEP-12
OPTIC GAMING: SEP-12 until SEP-16
LOUD: SEP-16 until MAR-4-2023
(both FPX and LOUD were unofficial WC and Masters/Champions winners)
I will continue this in another forum because if not it is a lot of text
Discord