I'm glad to hear you found something useful in my posts. Was it a post here, or was it the Ebay Guide I wrote for Salearea about Italain-made Coaches? If you find it helpful, be sure to vote at the bottom of the Guide:
http://reviews.ebay.com/Coach-Italy-Guide-Coach-Italian-Made-Bags_W0QQugidZ10000000051492233
Actually, the first one is a Sheridan, you can tell because the Dakotas didn't use turnlocks, and the leather grain on Sheridans is more rounded while on the Dakotas it actually looks square. Photos of both are posted below. It's style # 4225, a Sheridan Glenwood.
I'm not really sure about the second. It's probably from the East-West line from around 1999-2000 but that exact style isn't in any of my catalogs. My best guess would be an East-West Slim Zip but again that's just a wild guess. You might try calling Coach and giving them the 4-digit style number, they may still have it on file.
Third is a Sonoma Small Zip Bag, Natural grain from 1995. The striped lining, pebbled leather, style number starting with 49xx and sloppy creed stitching almost always belong to Sonomas.
The last one is a Fortune Cookie Bag from 2000.