I think there's a difference between how you handle crowds in the classics as opposed to DmC, mainly by what DragonMaster was saying. The classics aren't really about crowd-control as much as they are you just fighting a group of enemies. DmC's combat has a lot of positioning tactics to consider and make use of, which is often countered by the enemy's AI. They'll bunch up of you're trying to divide them up to protect the group, and they'll often surround you and interrupt your combos from the flank while you're attacking another.
DmC's weapon offer a bit more variety of purpose in that regard, like how Aquila is perfectly suited for zoning and spacing, while Osiris is perfect for hitting whatever is around and for verticality (most of its move are all about goin' up!). Arbiter is straightforward in hitting ahead of you, and Eryx is for hitting really close or getting enemies away. Rebellion then is that balance of everything, and whatever isn't covered by Rebellion is covered by his firearms; E&I holds, Revenant pushes away or pops up, and Kablooey spreads clustered enemies apart.
The standard smallfry in the classics didn't do a whole lot more than approach and attack (each of the Hells in DMC3 does this differently), but in DmC they don't. It was actually clever to make a spectacle hack 'n' slash game like a Devil May Cry and build the enemy's AI around interrupting those combos we love to do so much; essentially making the enemies not just a threat to your vitality bar, but also a threat to your spectacle. It's a deliberate action on the enemy's part to attempt to interrupt an attack, and that's why if you just stand around, so do they for the most part.