can't be sure without seeing the table, but my assumption is that you've connected the company <> contact tables at one point, and added new columns/enrichments on the company table afterwards
you just need to re-run the lookup column on the contact table, because the enrichments added after setting up the connection are not automatically synced to the contact table
but if you re-run it now, they'll pick up the changes, and every column that you now have on the company table, will be visible on the contact table lookup column