B is a bike lane
The rest I would define as shoulders with "I" in the sub category of shoulder, the dirt shoulder.
I've observed that people who live in the south call almost any extra section of pavement out of the traffic lane the bike lane, while people in the north call most of them shoulders unless they get labeled (like B). This is likely because shoulders are so much more common in places that get lasting snow. Many northern climate roads are built with paved shoulders so the plow blade is on pavement all the time, but can still completely clear the traffic lane. A side effect up here is even many low-med volm. rural roads where you wouldn't expect much bike traffic have an 18" or 36" shoulder similiar to those in your photos. They don't get thought of as bike lanes, so people call them shoulders.
Scot