Honestly, there are a good number of the infusions that I feel are the sorts of boons fighters should just naturally have access to and be baked into their progression, not all of them I admit, but still a decent half of the infusions
continuing off of this comparing how many of the artificer infusions could serve as classic fighter traits as 'warrior infusions' with minimal tweaking, where possible i'd make these innate rather than tied to an item.
Arcane Propulsion Armor - the only thing i don't have an alternate for, leans too hard into non-fighter themes to really translate easily?
Armor of Magical Strength - Herculean Strength: swap the INT bonus to STR and you're done.
Armor of Tools (UA) - On-Hand Equipment: you can produce 1 set of tempoary artisan's tools.
Boots of the Winding Path - Hasty Retreat: provides 20ft movement as a BA but you have to retrace your steps.
Enhanced Arcane Focus - Technique Mastery: increases the saving throw DC for any form of fighter class maneuvre or action(like a grapple.)
Enhanced Defense - AC bonus is applied to any armour/shield you wear.
Enhanced Weapon - to-hit/damage bonus is appled to any weapon you use.
Helm of Awareness - Heightened Awareness: no changes other than just not an item anymore.
Homunculus Servant: - Warrior's Attendant: you get a NPC lackey, pick from a selection of statblocks and traits.
Mind Sharpener - Greater Indomitability: gain extra uses of indomitable.
Radiant Weapon - can be used with any weapon rather than a specific one.
Repeating Shot - can be used with any ammunition weapon rather than a specific one.
Replicate Magic Item - no changes, maybe call it 'Craft Magic Item', i know having baked in magic items to progression is somewhat controversial.
Repulsion Shield - Defender's Push: can be used with any shield rather than a specific one.
Resistant Armor - Inherent Resistance: gain a resistance to one of the damage types.
Returning Weapon - Boomerang Throw: can be used with any thrown weapon.
Spell-Refueling Ring - Deep Reserves: once per day you can use one extra use of either second wind or action surge.