All timer if we are being honest. Will finish his career having won almost everything, incredibly versatile in a variety of roles, has one of the rarest profiles for holding midfielders. There's a reason City are such a different side with and without him.
Can we even class him as purely a holding midfielder anymore?
It seems to me like Guardiola changing formation with that extra CB like Stones and the FB stepping into the DM role has allowed Rodri to play further forward, and he has been able to bring that controlling influence higher up the field and is pitching in more in a offensive sense.
He's a much more rounded CM than what he started out in his first few seasons. I actually can't think of any weakness to his game.
I wouldn't go as far as stating he's the best player in the world, and in fairness the OP didn't suggest that, it's moreso been other posts. For me, the truly top 1/2 players in any period / era are the ones who get me up off my seat, are able to unpick the lock and bring something that nobody else on the pitch can do. Players who when they turn it on are the only player on the pitch that matters.
I wouldn't view Rodri as that, I view his brilliance as the consistency and efficiency in his game. He executes the basics of football to such a high degree almost 100% of the time.
Before, I would have likened him to Busquets, but I think he's evolved beyond the pure DM Busquets was. I think I view him as a throwback to a B2B midfielder, which is what sets him apart in modern day when midfielders seem to have such defined roles.
Agree with you that he has to be considered as an all time midfield great. In my lifetime, he's not at the Xavi, Iniesta, Modric, Zidane cohort, but that's probably biased by their profile and what I've stated as my favourite type of player.
Probably top 10? I'm always hesitant with these rankings, there's a tendency for recency bias (for me anyway).