One of the strangest things about the Trump impression they do is that it doesn't even use his speech patterns.
It's not even like there's a lot to it.
There's paralipsis (I'm not gonna say she looks like a cow I'm not gonna)
Makes himself sound off the cuff
Avoids pauses through repetition
He always tries sounding very positive no matter who he's talking to or about what (everything is beautiful, you're fantastic, we're gonna do incredible)
And with the whole thing about being positive all the time is it makes the odd time he does drop an insult feel that much stronger as it's like he's propping the thing up repeatedly just to drop it that much further down.
As it is it's like they're doing an impression of an impression of Trump. Which is pretty bad because the actual Trump is funnier to listen to and you can tell that the people making jokes about Trump are missing missing his jokes.