Last year, there were only about 5 or 6 teams surely out of it by the deadline, and with parity the way it is and the wild card opportunity, I doubt there are many GM who view themselves as out of it next year. I know teams would love to have Espinoza and Devers, but with them so far away from MLB and their vale still somewhat speculaive, I'm not sure we'd get back what I think these two are worth.
Now, I realize you have to give a lot to get top quality pitching under team control for 3+ years at a reasonable cost.
I realize a package of Swihart, Devers, Travis, Kopech plus one or two from Lakins, Dubon, Chavis, Basabe, Light, T Ball.... might not get the type of pitcher both of us are wishing for, and maybe the need to add Espinoza or Benintendi is a sure thing. I'd have to see who the pitcher is, before I agree to that big of a futures dump.
Concerning your list of 4 guys above, I'm not sure on the years of team control on these guys, but if it's 3 1/2 + years, I'd seriously consider offering Swihart, Espinoza or Benintendi, Devers and 2-3 others from my list above (basically anyone but Moncada).
You are right about GMs valuing players much differently than us fans here. One example was the rumors of so many GMs calling about JBJ. Some fans severely devalued JBJ after just 500 PAs of poor offense at the ML level. GMs look beyond certain size sample sizes and listen to their scouts.