Is Helping Speed or Ingredient Finder a better subskill for Ingredient Pokemon?

Hi everyone -- I've been an active sleeper since Summer 2023, and recently have reconsidered what ideal subskills are for Pokemon helpers.

I am wondering if anyone has research or pros/cons on the benefits of having Ingredient specialists, having Ingredient Finder subskills versus Helping Speed subskills.

i.e. all else being equal, what degree of desirability is an Ingredient Finder S vs a Helping Speed S on an ingredient Pokemon? And is it the same story for Ingredient Finder M vs Helping Speed M?

Related bonus Q: does the skill of the ingredient pokemon affect the above? (i.e. for a Tasty Chance skill, maybe Helping Speed would be more desirable for a player than Ingredient Finder... if they were also using them for that purpose. i.e. a Cramorant? Because speed helps everything whereas Ingredient Finder only boosts 1 of the 3 options, albeit more.)