Some candidates from a pure value standpoint would be someone like Alcantara, under control at 5/70 for ages 27-31 if the team option is exercised.
Manoah has been among the best pitchers in MLB since his call up with five years of control remaining.
Strider, Framber, McClanahan are other young ace calibre pitchers with lots of control remaining.
Adley would be tops on the position player side. Already up and performing at an elite level playing the most difficult position on the diamond with six years of team control remaining.
Guys like JRam, JRod, Acuna or Wander that have reasonable long term deals would fit the bill too.
Don’t really see any realistic scenario where Chourio is dealt, though, even if he struggles at AA this year.
It’s just exceedingly rare & takes the perfect combination of conditions (generational talent Soto stuck on going nowhere Nats) to see guys traded with that level of surplus value.