They are part of the 2023 Reveal 14. Spyderco launches their new stuff in waves throughout the year, each new launch batch is a "reveal." Usually takes several months for product to be available at distributors though.https://catalog.spyderco.com/spyderco-reveal-14-2023/?page=13
The LC200N variants I mentioned are pretty common. Look for the green handled versions of the Salt line...the Native 5 Salt in MagnaCut is pretty widely available at most dealers too. It hit shelves earlier this year.
Just go to the major distributors and search "Spyderco Salt" and it should return a pretty long list.
Yellow or black handles are usually the H1 steel (though they are moving to H2 due to availability issues). Green handles are usually LC200N.
There's some exceptions to that though, as most of the models they are introducing in MagnaCut are being released with yellow handles.