Charging iPhone 15 with a lower power charger?

Hello gurus. I have some chargers like 5V×2.4A = 12W (and even an old 5V×1A = 5W). Can these be used with my iPhone next to the Apple standard charger of 5V×3A = 15W / 9V×2.2A = 19.8W?

I understand that the the lower the wattage the longer the charging time, but my concern is whether a low-wattage charger will hurt / wear out the battery of my new iPhone 15. Thank you for sharing your advice.