I am looking forward to learning more about the Spanish influence overall. I would venture a guess that their holding Florida helped prevent an easy British accumulation of troops/supplies in the south that could have tipped the scales in their favor in the later years of the war’s fighting. Although, the British was able to strongly hold some major port areas in the war (New York, Philadelphia for a period, etc.).
I could see how Lafayette might not be too well known. I don’t recall much from history classes in school which mentioned much about him, if so likely only in a passing reference (while focusing more on the Founding Fathers).
I also wonder what British influences there might have been close to London and Parliament. Maybe there were some, if only few, that had thoughts of support for the American cause and in subtle ways politically influenced legal decision making or political appointments that in some way helped the American cause.