The interior of our OL, guard to guard, is probably top 5 in the league. I say probably instead of surely because that requires our new LG to be healthy and fit through the season, and because there is some question with our excellent young LG from last season moving to the pivot.
Where they start to fall off a bit is when you rack and stack them on the edges. Hav is above average as a RT, but his weakness to speed rushes keeps him from being elite among his peers. Jackson is similar, strong vs power rushers like Bosa but speed is his concern. Now the strength of the interior should help both of them in that regard, because a pocket for the QB to step up in hurts speed rushers.
If I had to rank them I'd put them around 10. And 13 is on the low end I think of where they will end up being, quite a bit lower than I expect them to end up. 13 is basically middle of the pack range, and I expect the Rams line will be significantly better than average.