What of now, then? NINE years since Jiren's birth and he is still at the summit.
Toei has succumbed to soulless, corporate chinkoids who opted for some CGI, isekai pedo rubbish for the new movie. It already flopped before it aired. Nothing but secondary characters at Jobhan level will show up. So Jiren's throne is still unreachable.

And what of the fanfic toilet paper manga, may you asketh?
Well... since its whole purpose is padding time and promoting Toei's material it is still dancing around side stories that conflict with core lore.

"Granola" and his planet "Cereal"... yeah, I know, real creative. Are all Hackopaco's original headcanon.
The whole premise of the arc is –and I'm not simplifying or exaggerating– "I wish to be the strongest"... -"oh yeah? Well I wish to be stronger than the strongest! Haha I one up u!"
LITERALLY.
Now, apparently you can use some random set of TWO Dragon Balls to be the strongest in the universe.
And guess what, even after all that headcanon and wishes, they STILL job or struggle to a SSB. YUP YUP YUP!
Jiren? STILL the indubitable. The unmatched. The unassailable.
Hell, that was confirmed the moment Hackouselesso decided to STILL attempt to keep Shitrus' power ambiguous and stated the wish didn't make them stronger than him. Which already sets Jiren's premise (stronger than all GoDs) above this petty little promo arc.

I just CAN to the NOT believe how Toriyama tapped into his youth genius once again and came up with this Great Alabaster Entity.
WOWETH.