Not sure any of the "big boys" were ever realistic . The top college guys are either not inclined to be NFL coaches( Shaw, Petersen), Only in their second year at current college and love their job(Harbaugh and the Wisconsin guy for some reason his name made the list) or been out multiple years( Gruden, M. Shanahan) and may not even want to coach again.
Sure the Rams may contact them all to gauge any level of interest they may have but I would only believe they were snubbed if one of them takes another of the openings for coaches.