For reasons not abundantly clear they seem to value mobility much more at OT and C than they do at OG. Just looking at the guys they've kept and let go. For example, if mobility is a priority at OG, why keep Cotton as a backup and let Driscoll go? I want to believe the same as you're saying, but I don't see the moves they make going along with it. Two OGs that are of the archetype you describe, and likely at least one is available at 98, are Luke Kandra and Connor Colby. Consider too, our offensive match is the 49ers. They did well with Tomlinson for several seasons at LG. Not the most mobile OG out there. They replaced him with another guy who's much the same, Aaron Banks.
However, when we had a healthy Wynn at LG, and Hunt at RG in 2023, the OL seemed to function much better. Both are former OTs. That should tell them something, and us too, I guess.