There is a book including such an escape by the very prominent Reichmann family. The senior Mr. Reichmann was from Hungary and had created an egg cartel among all the egg farmers in Central Europe. His wife was from Germany and a member of the Gestetner office machine family. Tey lost at least one son to the Holocaust when he was summarily shot for receiving by mail some chocolate from his mother. The family fled Europe through Spain to Spanish Morocco where they stayed to the end of WWII expending a large amount of money to free fellow Jews and facilitate their escape through Spain. The Reichmanns went to Montreal to live, created a great construction company Olympia and York and made great success by delivering their buildings earlier than agreed, better quality than agreed and for less money than agreed. I am sorry that I do not remember the name of the book. It was written by an apparently non-political business reporter for the Toronto newspaper. There are probably thousands of untold similar stories of those who escaped through Franco Spain.
The treatment of Franco's memory in the West has been a rank disgrace and injustice.
I understand what you are describing; Spain was a haven for Jews during those times. Their economic decline afterwards resulted from the West ostracizing Franco. I read a speech from Franco (I believe it was in the 1950s), which he delivered to Americans when they approached him about putting US military bases there. He agreed, but chastised them for realizing so late what he had opposed 20 years earlier.
When the Civil War ended, he placed his sword on the altar in a cathedral in Spain vowing to never use force again unless it was to defend Spain. He kept his word, while we fought our wars in Korea, Vietnam, and various Caribbean adventures. We were in no position to judge him; we were allies of Joseph Stalin.