Still not done yet ranking the drivers.....right now, I have them ranked 1) Hamilton, 2) Alonso, 3) Vettel, 4) Verstappen, 5) Ricciardo, 6) Ocon, 7) Perez, 8) Hulkenberg, 9) Sainz. Now let me look at Riakonnen and Grosjean, who are hard to compare against the rest.
Grosjean teamed with Alonso in 2009 that was a disaster (I am sure Van Doorne knows the feeling):
Alonso versus Grosjean
................Qual........On Track.........Points
2009.........7-0..........4-0..................13-0
He then teamed with Raikkonen for two seasons
Raikkonen versus Grosjean
...............Qual...........On Track...........Points
2012.......9-10............9-2....................207-96
2013.......11-6............7-4...................183-114
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...............20-16..........16-6.................390-210
While Grosjean did a credible performance, Raikkonen was clearly better. There is no way to directly compare them to the Ocon/Perez/Hulkenberg cluster (who are all pretty equal to each other), but the different between two drivers lead me to place Raikkonen above that cluster and Grosjean below the cluster. This is somewhat of a judgment call.
By the way, Raikkonen did team with Alonso the year after.
Alonso versus Raikkonen
..............Qual.........On Track..............Points
2014.......16-3.........15-1....................161-55
That is a pretty one-sided result, indicating that Alonso is kind of in a different league that Raikkonen (and when Alonso was teamed with rookie Hamilton in 2007 they were equal).
Raikkonen was them teamed with Vettel for four (long) years:
Vettel versus Raikkonen
2015.......15-4...........10-3...........278-150
2016.......10-11.........10-3...........212-186
2017........15-5...........13-2..........317-205
2018........17-4............8-8...........320-251
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.................57-24.........41-16........1127-692
Now.....Alonso outperformed Raikkonen more than Vettel did....so one could use that as an argument that Alonso is better than Vettel....but there are several reasons to rate Alonso over Vettel. Clearly Raikkonen is below either of them.
So if Raikkonen gets slotted above Ocon/Perez/Hulkenberg.....and below Alonso and Vettel, then were does he fit compared to Verstappen and Ricciardo? The only real comparison we have is the season Ricciardo shared with Vettel, and it was a weird season for Vettel, who notoriously underperformed:
Vettel versus Ricciardo
2014......8-11..........3-11....................167-238
So, I think by default, I have to place Raikkonen below Ricciardo. This still puts him above Ocon, which I have some doubts about.
As for Grosjean, while I generally consider him in the same league as Ocon/Perez/Hulkenberg, he does have some inconsistent seasons. So I have to rate him below them....but I will slot him in above Sainz (which knocks Sainz out of the top 10).
Next (and last): Leclerc and Gasly.