100% agree with you on BB3 and White.
Jackson is a little more tricky because of his position. It's not super easy to find good LTs. If they let AJ walk, there is not likely to be one in free agency so they would be forced to draft one in the 1st round. Knowing Snead and how the Rams have operated for the last decade in that they don't like being forced to draft any position, they won't enter the '25 draft with a LT hole. This is especially true considering that they may have big needs in other high-priority positions. Namely, QB (Stafford's replacement) and CB.
Also, consider that the Rams tend to keep decent LTs around. Exhibit A: Noteboom.
Thus, my conclusion is if Jackson continues improving and balls out this year, it's likely they sign him to an extension. If he doesn't improve but merely performs at 2023 levels, I give it a 40% chance they bring him back on a palatable contract.