I don't think Chiesa, Under and Oyarzabal are good picks at their current price. You could be waiting a long time for them to do anything noteworthy PB wise - just look at their modest PB averages and the long run of low scores they tend to deliver. Maybe they'll manage a big score once a season, but your capital is going to be tied up hoping for that one good game. They're all at comparatively small clubs too, so little or no MB potential. Plus if you look at their graphs, they've all peaked in price recently, so they are going to need to deliver consistently high PB winning scores or be linked with a move to the Premiership in January to achieve any significant further growth.
Odegaard has played one PB eligible game in his entire career. Yes, he scored 119 PB points, but 1 game is nothing for a 20 year old on FI. Again he's peaked in price recently, so now is probably not a great time to buy.
In contrast, J-Rod's price has fallen to a one-year low and his PB (and MB) potential is far greater than those players. His problem is obviously that he hasn't been playing regularly, but if he can force his way back into the Real side (probably not) or move to another large European club (much more likely) before the Sept window closes, then he could double in price more easily than the others.