So Munitions Crafter has this note:
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You become trained in Crafting and . . .
You also gain the Alchemical Crafting feat and four additional formulas for 1st-level alchemical items.
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Herbalist Dedication does NOT state that.
Alchemist Dedication does:
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You also gain the Alchemical Crafting feat and four additional formulas for 1st-level alchemical items,
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The background Pyre Tender; currently the only background that gives the feat Alchemical Crafting does NOT have that statement.
Alchemical Crafting then has:
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You can use the Craft activity to create alchemical items. When you select this feat, you immediately add the formulas for four common 1st-level alchemical items to your formula book.
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So does this mean that everyone who has "Alchemical Crafting" has 4 starting formulas, but if you have Munitions Crafting or Alchemist Dedication (or any others I have yet to note that call out 'additional' formulas) you start with 8 formulas?
I also assume that you only gain additional free formulas as you level if your actual class is alchemist (or some future class with that same feature)?