Yes, unfortunately the streams that support natural reproduction of trout list does not indicate the species present. It could have, but it doesn’t. That may have been a smart move in that species dominance may change over time and I doubt that the majority of the streams on the list will be resurveyed within decades from now, if ever.
Additionally, you need to be careful in using the natural reproduction list in order to determine fishing locations regardless of whether or not the streams’ riparian lands are public or privately owned. It only takes 3 fingerlings or three trout representing two separate year classes found in 100 m of stream length for a stream to qualify for the list. That minimum is not going to provide good fishing, although sampling sites are often at the mouth of a stream or at the point along its length where the minimum can still be met. This means that populations may be better farther upstream, but on small streams you may run out of water before you find better upstream populations. Additionally, some streams on the list are so thickly lined and protected by rhododendron or multi-flora rose that fishing is impossible or nearly so except perhaps in an occasional opening that also just happens to coincide with some decent holding water for desirable size fish. Good luck on those! In conclusion, if investigating from afar, the natural reproduction list will only be a starting point for those waters while the Class A list will at least almost guarantee a much greater number of trout unless something substantial has changed since the last survey. Neither list guarantees fishable water.