So in Canada we have uncontrolled airports, ATC controlled airports (larger / busy sites), or at moderately busy sites (such as Kamloops), FSS providing airport advisory service. The same traffic service as ATC, mandatory frequency, just no instructions or clearances. At some remote / northern sites, you will also find community aerodrome radio stations (CARS) which are similar to a UNICOM service providing basic traffic, weather and site NOTAMs
The FSS here are broken into two groups...airport advisory and flight information centers (which is my job!). The flight information centers are closest to what you are used to in the US with Leidos.
The level of service provided at any given airport is based on a combination of factors including traffic numbers, complexity and airspace.