Each pledge has access on the top right of them. Some have Launch access, Then Beta access, Then Alpha access.

None of which currently have access to the game. It is in pre-alpha available to Devs friends and family only currently.

The basic Elyrian package has access to Prologue, Kingdoms of Elyria, and Prelyria when released to the general public

If you're ever unsure, when you click the package to see the package details they are the first things mentioned on the Top (sometimes top left) under "Account Rewards"