The first two vids of yours are pretty decent for big ocean water and waves but in most other examples water lacks that certain something that a few games seem to have.
This is the best short vid i could find from gtav which shows some of what im talking about (watch in 4k fullscreen!). Notice how the water shines and looks good at all angles especially noticeable in the last half. It doesn’t have such plastic looking quality or unrealistic waves as unreal does.
Also a lot of the more clear looking lake waters i’ve found when viewed from an fps angle seem to fade away at the shoreline and lack substance. Thinking about it im not sure i’ve seen good glass or transparent stuff in general?
The best clear pool water effect demo comes from epic themselves which you can see below (skip to 42 minutes in).
Sadly though they never released the project or a tool to easily do this ourselves?