When I was doing my early yoga training I came across a number teachers who seemed to claim that they had found the yogic secrets and that their sequence of postures was from a lineage of people that dated back thousands of years. Usually it was not an unbroken lineage, however, and the current teacher/guru just reached back in time and recreated the secrets of the ages or heard it in messages sent via dreams or visions.
Then I met Sam Dworkis and I said, "Sam. You're a senior teacher and you've been close to some serious yogis. What's the truth? What's the 'best' yoga sequence?" Sam looked at me and replied, "Do some standing poses, some floor poses, some forward bends, back bends, and some twists." What?!? He didn't try to sell me on his version of what the "right" thing to do was. Because there is no "right" thing to do.
Whatever gets you to class. If you go because you think that sequence of poses will work magic, then go and do that sequence. Whatever gets you to the path will be fall away anyhow and you'll be left with yourself and your own practise.
Today at lunchtime yoga someone mentioned to me that there's a country singer named Sam who sings a song that says, "the secret is that there's no secret." Yoga's everywhere!