That group is in progress to becoming a part of Haim Zut Krav Maga association so in fact I don't know what other different groups are there in Krav Maga.
Nice videos, especially the second one. A person I know claims that he found something about Lithuanian martial arts style. We were going to meet with him and discuss all that for a few years already, but this never happened. It seems just another speculation with terms. Lithuanian martial arts style, coming from pagan Lithuania, mostly wrestling etc. though if we ever meet, I'm curious to see what he knows myself..