Hello Jim, Your #8 Post shows the clear evidence of several design features probably made through cross regional movement in the Indian Ocean... Here I want to comment upon the broadened blade aspect of such a design movement also shown at #2 By TVV. . Clearly there has been a lot of sword design flow across the Indian Ocean
I have looked through some excellent entries on Forum in this regard and at the web in the case of the following reference
https://www.mandarinmansion.com/glossary/moplah-sword centuries gone by.
Key artwork for inclusion here is on the distinctive broad blade of the Moplah...my suggestion being to illustrate how such a blade could well influence swords could have been influenced across the Indian Ocean from the home of the Moplah.. The Malibar Coast.