Companies that offer best practices to customers are trying to sell something that can't deliver what it promises. The dilemma is, of course, that most customers won't pay that much for something that is labeled as just "great" or "good".They expect "the best", and best practices promises just that. They promise exclusiveness, something unique. But a copy of something is not either exclusive or unique. It's just a copy.
If you are looking for best practices, then you should try to develop these best practices yourself. You sure need to study the practices of other companies, and you might need to turn to someone who has the skills and experiences which are needed. But don't ever expect that you can buy a best practice off-the-shelf as if it was a commodity. It's not that easy to become the best at something.
So, go look for inspiration and help if you need to, but try to forget about copying best practices.