The robots from IRobot w/ Will Smith are pretty good same with the zombies from I am Legend. The Lycans from the Underworld movies aren't bad either. Newborn vamps from the Twilight series.
Skull crawlers from Kong skull island. And the V-rexes and the bugs from 2005 King Kong. They were all trying to eat Ann even while getting beat up by Kong. Half the time they weren't even fighting him but trying to get her.
And yes. I will also propose another zombie type: Zack Snyder's DotD 2004 remake zombies. Direct sprinting at any human once line of sight was established, whether they were missing an arm, ran into an obstacle, etc. 0-100mph at the drop of a hat.
Another type of fodder: army of the dead from Return of the King. Granted they are part of the good guys' forces under Aragorn, but the whole can't be hurt because we're spirits thing worked quite well in their favor against anything Sauron had.
Another worthy mention IMO are the Crazy 88 from Kill Bill. They might not have been all that skilled, but they were still a small army of borderline-suicidal, bloodthirsty, blade-wielding maniacs.
And in that same vein, the War Boys from Fury Road. Those guys were lunatics.
__________________ Never take life seriously. Nobody gets out alive anyway.
If I had to narrow down a pick though, and excluding the ones already mentioned by other posters, I would probably go with the War Boys. I don't think those people know what "overkill" means. Pretty sure the guy from the side throwing the exploding spear right at the driver would have been more than enough. But nope, gotta have that extra guy jump on top with another pair just to make sure.
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So, I would definitely say that fits the "aggressive" part well.
__________________ Never take life seriously. Nobody gets out alive anyway.