I use Yorkie Splash,(shampoo) Shine,(conditioner) and Sheen.(detangler)
If you are very determined to find one that will be no more than 5 lbs, try for an adult dog. They still bond with you very quickly, you get exactly what you're looking for, and most are already potty trained. Mine was! I got him at a year old, he's super smart, and we're attached at the hip.
You can look are retired breeding dogs, and rescues.