You can find more information about this topic in previous posts here and here.
There is currently no hardware counter that only counts solvable bank conflicts (which would also show on the Source page). Other arbitration conflicts that result in a replayed wavefront would be included. Summing “L1 Wavefronts Shared Excessive” on the Source View page is the best method to only count bank conflicts.
The terms “S2R” and “SHFL” are assembly opcodes meaning “Move Special Register to Register” and “Shuffle”.
Note that you can see the underlying formula leading to each entry by hovering it and inspecting the tooltip.