Typically, domestic forecasts are using the HRRR, which is ridiculously accurate (at least as far as meteorological models go), but only does the territorial US, and to a limited range in the future.
IFS (The Euro model) is global, as is GFS (NOAA's global model).
I love Cliff!
He has ragged on GFS significantly in the past- and it's well deserved. The GFS is not very good.
He has generally indicated he's quite impressed with the HRRR.
To be clear- things like "10 day weather forecasts" are not done with the HRRR, but those forecasts tend to be not-great no matter what model you're using, though significantly less not-great using better foreign global models.
Typically speaking, the HRRR provides the highest resolution (spatially and temporally), and most accurate weather predictions over US territory for the next 18h or so. It's the source of your "daily weather" (aggregate and hourly, etc.), and NAM handles major storm tracking over the US (which no model competes with, within that specific domain)
GFS is trash-tier though, and Cliff has been desperate to see that improve for a long time.
NAM, he seems to be a bit jilted about. He claims UW's high-res system is better, but then gets pie on his face when NAM outperforms his own predictions.
He's human like the rest of us.
I'm not a meteorologist, but since discovering Cliff a decade or so ago, I've read very heavily on the topic of meteorological modeling because it's pretty damn fascinating. All I can provide is a less "entrenched" view. In no way should my word be taken over Cliff's.