Hello,
I have been studying Kuntao-Silat deThouars 3 times a week for a little over 2 years now (beginer)
From my experience, Silat tends to be comprehensive and all inclusive. From empty hands to multiple weapons. From defending against one attacker to many attackers. From grappling to high kicks....
The famous Silat styles from the island of Sumatra are: Menangkabau, Harimau, Kumango, Sawi, Lintau and many others (From Don Draeger's Book.)
Anybody with any interest in IMA, should get Don Draeger's book "The Weapons and Fighting Arts of Indonesia." It is available thru Amazon. This book explains the history and the developement of MA in the Islands. Hope this helps.
In Hormat,
Bill Maniotes