| 1 | RLHH | RaiLink Canada Ltd, d/b/a RaiLink Southern Ontario | added 7/1998; 7/2000; eliminated 1/2004; 7/2005 | | NAKINA |
| 2 | RLHH | RaiLink Canada Ltd, d/b/a RaiLink Southern Ontario | added 7/98; 7/2000 | | NRHS |
| 3 | RLHH | RAILINK CANADA LIMITED d/b/a RAILINK SOUTHERN ONTARIO | | | PWRC |
| 4 | RLHH | Southern Ontario Railway (Genesee & Wyoming) | | | RSRV |