Black and white belt = Hampshire, Red with floppy ears = Duroc, Black with white feet, snout, and tail and erect ears = Berkshire. Berkshires are prized for firm red meat with marbleling.
Black with white feet, snout and tail and floppy ears
= Poland China, White with erect ears = Yorkshire, White with floppy ears = Chester White. There are a ton of other breeds too and just like horses they are often cross bred.