mrclarks,
The Sonos One 'Alexa-enabled' Speaker supports a variety of Alexa skills. See this thread:
https://en.community.sonos.com/announcements-228985/sonos-one-now-supports-many-more-popular-alexa-skills-6806792/index1.html#post16233450
If you are using an Amazon echo device (e.g. echo DOT) connected over WiFi to a 'Sonos Household', via the Sonos Skill, then many of the Alexa skills will only work just on the echo device.
In the case of a Sonos Connect or Play-5 Speaker, you can cable those (line-in) to a Echo device (with no Sonos Skill enabled) and then all the Alexa skills are available to that 'Sonos Room', or any other 'Rooms' that are grouped with it.