Sorry it's none of those frequencies. I am aware of all of them.
I believe they probably are on someones repeater or trunked system, but I don't know whose. If they are on a repeater or trunked system their name would not show up on TAFL because only the name of the licensee would show and their customers are kept secret.
I think even a callsign might help but I don't have one.
Having said all that, thanks for trying to help. It is appreciated.
Ralph, VE3EUK