We won't know which teams are entered until the starting orders are published next week.
Seniors -
Best guesses - Cooke/Kennedy, Wessenberg/Caputo (who apparently are still skating together) and 3 other teams.
We have yet to see the following teams compete this season - Fredette/Siianytsia, Mokhovs, Shin/Nagy.
Martins/Bedard are coming back from injury and haven't competed since Glacier Falls; Korytek/Chapman competed last weekend at Pac NW Interclub Championships - they're not eligible for international competition, so they may want another competition.
Other possibilities - Digerness/Sadusky, Fitzpatrick/Bearinger, Hanns/Neudecker, McBeath/Parkman, and Plazas/Fernandez - the last two are the least likely, IMO, but McBPark may want another competition before SkAm and PlaFern are currently injured but I think they'd rather go to Trophee Metropole Nice's Sr B competition for their season debut than the last NQS.
Juniors -
Gottschalk/Herbert, Grohne/Lunt, Jarmoc/Witkowski, McFarland/Andjorin, and Shapovalova/Griffin would be my guess - the other junior teams we have are all on the ISP and have had some great international competitions already this season.
Novice -
There are only 7 novice teams that have competed so far this season - there could be other teams but the 4 entries probably come from this group - Meek/Meek, Kerr/Castelletti, Tanner/Apter, Ji/Chen, Floyd/Lewis, Gariti/Curtis, Yun/McGee.