For me, these are the perfect wives for the sons of Henry II and Eleanor of Aquitaine
Henry the Young King - Alice of France
Richard I - Constance of Sicily, he inherits Naples and Sicily, the two are of the same age
Geoffrey of Brittany - Constance of Brittany - his OTL wife
John lackland - Dulce II of Provence, in this case he would be used in order to encircle the County of Toulouse, in that case, she can alternatively just used as a marriage alliance with aragon not claim the county of provence itself..if he marries her, their son can marry Isabel of Angouleme instead..