Doku looks by far the better choice out of these three for me, especially when you base it on the above stats too.
I previously liked the look of Jeremy Doku the only issue I had was his lack of end product, but his passing numbers are better than I thought, honestly thought he might be the weakest and with his dribbling ability I think Pep could work wonders.
People were saying that Olise was let down by poor finishing too when praising him, instead it looks like he has overachieved with his assists.
When you look at this graph it actually looks like Doku is the one being let down by poor finishing, his teammates defo seem to have let him down last season in a better team he get plenty more, he totally destroys both the other options in every other aspect of the above graph.
Not only does Doku completely outshine the other two in all the above aspects, he's done that while playing far fewer minutes too it's close to half as many minutes as both.
Those progressive dribbles and better passing plus numbers plays more frequent successful key passes, it all shows he's grown a lot these past few seasons from the very raw 18-19 year old I saw a good few times, when I previously saw him he'd look good on the ball and quick but always ran into blind alleys.