Welcome to RR -- now forget that other website, those listings are laughable when compared to the RRDB. As to the specific frequencies: 155.49 is listed in the RRDB under Kay County so it's there as a Mutual Aid channel as it has been in OK since the 1960s; 155.37 comes up in a DB search as a Texas Mutual Aid channel in use in some border counties. I have been in scanning in the north central part of OK since the mid-70s and have no recollection of that frequency being used in the area.
Also, welcome to OK. What brings you to OK?