This is a very good introduction to Lupin! As someone who loves the series, I think you did a great job covering the history of the franchise. The only thing I would add is that although Lupin is still popular today, I think the current Lupin series is much different from the original Lupin stories.

For example, in the manga by Monkey Punch, Lupin has many partners and a group of friends who help him out. One day, he goes off to find a treasure of a lost pirate ship, leaving his friends behind to guard the mansion. Of course, they all eventually join him on the adventure. But now, in the modern Lupin series by Jigen's creator Kenichi Sonoda, Lupin is a loner who likes to work alone.