I do agree with your description of
Louisa. I've never really thought much about it though. Hmm! These are my favorites that I'd say have the same feel and structure as
Frances Ottoline Mary (which, by the way, is amazing, but you already knew that):
Louisa Beatrix AnneLouisa Bryony PearlLouisa Clemency JaneLouisa Romilly
JaneLouisa Romilly
Pearl