Can someone please tell me the difference between these three coats?? I'v been reading bits and pieces throughout YT threads about it, but I'm still confused

. If you have a yorkie with Modified, Cotton, or Soft can you please post pictures of them and say which coat they have? I know my girls coats are not silky, but know its figuring out which coat they have between the three cotton's.
Also, for those of you that do have the cotton type coats what shampoo did you find that helps their coats the best???
Thanks for ALL replies in advance
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Candee, Bear, Daizy (in spirit, R.I.P) and Pepsi's mommy