Wow, the update really made a significant change! Thanks for sharing your findings. It seems like Celadon mart offers a variety of headwear options, including Headband, Flat Cap, Bow, Cap, Stripy Cap, Reflective Goggles, Peaked Cap, and Backwards Hat on the https://sevenxsports.com & https://ioniasports.com/. In Viridian, you can find Classic Cap, Boater, Backpack, and Shoulder Bag. Pewter has Camping Hat, Nurse Hat, Boater & Sunglasses, Chunky Beret, and Explorer's Hat. Lavender offers Beret, Pointed Hat, Teddy Ears, and Tricorne. It's great that you're planning to explore Hoenn soon. Mauville has the items you listed plus Beret and Pointed Hat. Oldale has the items you listed. Petalburg offers the listed items as well as Swimming Cap, Vest, Shorts, and Cap & Sunglasses. Verdanturf has what you listed plus Teddy Ears and Tricorne. Lastly, Mossdeep offers the listed items plus Peaked Hat, Backwards Cap, Hood, and Horns. Happy hunting!