I've had Arabians for over 30 years and I wasn't aware they're groomed differently than other breeds.
They get brushed, bathed, and clipped the same as any other beastie, so I'm not sure what you're asking.
If you want to keep him 'show clipped', you'll have to do the insides of his ears, his muzzle, any long facial hairs, his fetlocks, the hair on his coronet bands, and a fairly long halter path, also known as a bridle path. Except for the longer than normal halter path, all the other breeds do the same thing.
Show clipping for winter is different because it involves body clipping, and depends on what discipline you ride.
Arabians are just horses, dear. There's nothing truly different about their grooming, clipping or bathing than other breeds.
I have a fleabitten grey. If you want them to be as bright and clean as possible, use QuicSilver. It's kind of pricey though, and I only use it every so often. Most of the time my horses get bathed with Suave shampoo.