I've basically been doing the same, overall profit or cashflow compared to just $ per plate and have been making around $200k a day, but then of course I spend it fairly quickly on either expanding the pantry or a shop to hold more items or buying an appliance/recipe to unlock, nevermind additional decor. You'd never know I actually made $200k when I spend it just as fast.
What is interesting to note is that many plates that are $5 or $6 plates, aren't the highest profit plates. For the commercial oven you have Osso Buco that only makes $2 but the profit is $1,820 or Fajitas that only makes $2 but the profit is $1,214. Eggs Benedict is the highest per plate at $5 but the profit is only $281.
I'm really interested to see if the results vary and may have to experiment myself. Let all my food run out (not that hard to do since every night my counters clear) and then only cook $5 or $6 food for that day, then the next day when the foods run out again, cook only by highest profit per appliance. The only thing is keeping me from spending money on anything but ingredients during the experiment.