Any game using version 2 possible to use newest versions of this library seamlessly. For example Rise of Tomb Rider use library nvngx_dlss.dll version 2 (2.3.2.0). But game works fine with 3.7 nvngx_dlss.dll from Remnant 2 latest build etc. The quality of upscaling is rise as well. I tryed this method with RDR2 and it works also.
Topic on Talk:List of games that support high-fidelity upscaling
Yes, this is mentioned in the upscaling glossary page Doesn't mean that the list should say every game comes with the latest version of DLSS.