Further news from my contact in Spain. Apparently it is fine to give any non-identifying information to recipients of donated eggs or sperm, although she tells me that most people coming to her clinic just want to know that the donor is healthy and a good physical match has been made.
So if you or anyone you know is going to Spain for egg donation and they want to have more control over choosing a donor and to have significant information to help them with this, they need to make their needs known. Don’t take no for an answer and particularly make sure that any claim that it is against the law in Spain to give more information, is challenged. Nothing will change until paying customers demand it.