Starting Premier League games will be very difficult for all of them IMO.
Regardless of how highly rated Gomes and Tuanzebe seem to be on here, they are distinctly behind Lingard, Mata, Pereira and Lindelof, Smalling, Jones respectively. It means there probably needs to be a couple injuries in their position before they will even be considered. I wouldn't be surprised to see 0 starts for both of these players, unless the following happens:
1. We have the usual injury cross at CB.
2. We are either mathematically incapable of finishing 4th, or are certain to finish 4th but can't reach 3rd at the very end of the season (last 2-3 games).
Garner and Chong are even less likely. Despite us not having the quality we desire in midfield, there are too many CMs in our squad for Garner to step in yet. Chong has slightly more of a chance if Alexis Sanchez continues to underperform or remains injured. However, he will still be behind James for the left wing role and even Greenwood for the right wing role IMO. To get in the side he will need Martial and Sanchez to be unavailable, but that would still probably mean he only gets on the bench. Ole would probably favour playing Lingard, Mata, James, Greenwood or even Dalot on the right. While even if Alexis, Martial and say James were out, I think Ole would start Greenwood down the middle and Rashford on the left, with a more senior player on the right, or even use the diamond before turning to Chong to start.
Greenwood is the most interesting and I think he will be the one to make 10+ PL appearances, but unless he hits the ground running and really makes the Right Wing position his own, probably less than half of those appearances will be starts.
These guys will get plenty of game time in the cups though. Probably less so Garner, but I believe they will see some serious minutes and I might be proved wrong on PL game time if they perform well elsewhere.
If there are more than 10 PL starts combined for the players listed in the OP, I'll be surprised.