Rams have a ton of draft choices coming in 2022 plenty of opportunity to restock and add a LT too IMHO. So for example, if the Rams were able to extend Corbett and sign a free agent like Terron Armstead of the Saints for example (their cap is bad too) then the rest of the OL does not look as bad. Again, hopefully, Corbett proves to be effective at Center, which would give the Rams an opportunity to extend him during the season as I don't expect it to be too expensive.
As to the likes of AJ Jackson & Jordan Meredith, Jackson might have a chance as a backup, but I don't feel good about Meredith, playing at Western Kentucky and only 6'2 300lbs, I don't hold out too much hope, but with a total of five extra picks in next years draft a 3rd (Brad Holmes) 4th(John Johnson) and three 6th's (Ebukam, Everett & Hill) I expect the Los Angeles Rams to retool the depth along the offensive line, but the big plan will be how to replace Whitworth & IMO, Armstead if available being 30 next year would be an excellent start.