Non, the only leader you can think about is hugo, since it adds to the other rescues, other than that anita elvira ghoub lea lobo and slyde, then hax and larry for elo, or switch lobo for larry and add alec and kerry for type 1
I think ashigaru is not very good at elo, since the rest of your cards are 20 stars, and it ensures only that the opponent will start pretty much every time.
(You probably know, that the player with more stars start the duels.)
I don't think putting ashigaru in any elo deck worth 5* (instead of bodenpower, kolos, or charlie)
Bridget is not bad, but still not very good for elo, although if you add some more defence: steeve, and denise, it can be useful.
Yup the typical leaders for elo are hugo, which makes your advantage 15 attack points, or ambre, which adds you some needed power.