Hmm this is not really a straightforward answer. First there is not necessarily an overlap between the two questions.. For example Blind Tadic and Berghuis woud definitely be in the list of best players, but its not likely for them to make another move to a bigger competition..
On the other hand you mention a top 5 league, which also consists of clubs like Ausburg and Stade Reims, and there are a lot of players in the Eredivisie who could end up at at least such a level club.
But given how you phrased the question I think you are looking for the top talent who could potentially end up at a top 6 PL club or top 4 club in France, Italy, Germany, Spain..
Ajax:
Main contenders: Antony, Timber, Mazraoui, Gravenberch, Alvarez, Martinez, Onana
Could get there: Neres, Schuurs, Rensch, Taylor, Kudus (if he stays fit), Brobbey
Feyenoord:
Main contenders: Senesi, Bijlow, Malacia, Sinisterra
Could get there: Kokcu, Geertruida, Aursnes, Pedersen
PSV:
Main contenders: Sangare, Gakpo, Madueke
Could get there: Boscagli, Veerman, Vertessen, perhaps Obispo (I rate him..)
Other teams:
Main contenders: Wijndal (AZ), Midsjo (AZ)
Could get there: Suslov (FC Groningen), Bazoer (Vitesse) Karlsson (AZ), Openda (Vitesse), Doekhi (Vitesse)
I left out players in of a higher age category like Blind, Tadic, Klaassen, Berghuis, Tagliafico, Zahavi, Gotze, Ramalho, Trauner, Toornstra...
Propably a lot to argue about with other Eredivise followers who would disagree about certain players, but for
@Graveyard I think it gives a decent overview..