Even if anybody really knew, a rating only matters for games against humans. You haven't played any games against humans (at least not here).
In the first place, ratings based on play against those computers wouldn't be reliable from the human side because takebacks are allowed. Another problem is that the strength of those computers varies with the device being used to connect, so the strength playing from a 3 year old phone wouldn't be the same as the strength playing from a modern PC.
The only way to confirm those ratings would be for a statistically valid group of rated players who have played humans to play against it and have the results of their games recorded and rated. Unfortunately for you, that is not done here, so no one is in a position to confirm the ratings.
What you might try is the live chess computers. Most people seem to find them challenging and post threads here whenever they win. You might try playing against a real person too. Most people quickly lose interest in playing against the computer when they have played against humans.
This has probably been asked before, but I'm trying to determine the approximate rating equivalent for the levels when you play the computer. This is what I have read before. Can someone please confirm that it applies to chess.com? Thanks.
1-400
2-600
3-800
4-1000
5-1200
6-1400
7-1600
8-1800
9-2000
10-2600