Well BJJ and Judo both focus on live sparring or Randori.
As far as multiple opponents its gonna be hard for anyone or any style taking on multiples.
Most Judo/BJJers also take Muay Thai or Western Boxing as well...where they fight single opponents.
If I can throw someone on cement or do a Matrix move, I'll do a throw
MM
That is exactly my point a martial art verse "combat type training"
Many people that recommend BJJ, base this recommendation on watching MMA.
Many years ago I was attacked by 10 guys armed with knives and clubs.
Laying on my back in the guard position would have been fatal to me.
Knowing how to fight multiple opponents helped safe my life.