....... they offer different map features. .....
Not fully understanding how this all works, this is an aspect of OSM that I'm vaguely aware of but which I've never explored.
My foggy 'understanding' is that there's a database of hard information about actual physical roads, etc. and then separate 'overlays' created by different authors which when combined with the base data, deliver the map with an appearance chosen by the overlay author according to whatever he/she thinks looks/works best for a chosen purpose.
So one flavour of OSM might be optimised in its choice of say, colours for the different road sizes, for driving and another for cycling. Ditto for whether or not to include selected 'points of interest' - petrol stations for drivers, cafés for cycling for example.
If (?) this is correct, it leads me to think that there may be a version of OSM out there which would give me a version less cluttered but still with the fundamentals needed for cycling. Is my understanding correct or have I got the wrong end of the stick?
Having said that, I have to say that the "Cycle Map of Europe" (or however it's titled) that came bundled in my Edge 1000 seems to do a pretty good job, so perhaps I don't need to look further?