Sort of funny to mention on that, based on the bull**** sources posted throughout these threads, but as you do. The point in referencing Wikipedia was just for a ballpark, and also was due to time. In any case, I think it's a bit far to say they've 20 across 3 models of bomber, though. Arestovych says a lot of things, as well.
At least for the Tu-160s and Tu-95s, those are reported as part of New START, it seems. But not a very granular breakdown there, e.g. https://www.state.gov/new-start-treaty-aggregate-numbers-of-strategic-offensive-arms-3/