If you have had the opportunity to sit in the most recent ranking session for 2022, you would know this to be true. I have heard the same from others within Ministries - caveat, I don't know if it applies to statboards but they generally take alignment from Ministries.

To the question on how one knows their LP, the short answer is you don't and you won't know unless your RO chooses to tell you. You can also ask your RO, who can choose to let you know.

There is also an indirect way - most LP 9 and above tend to be placed on schemes within their own Ministries which generally involved being stretched and rotated. That's when you know.