I don’t think there are any good references for either that give the detail we would both like to see.
As Franck has pointed out, the best we can do is look at statspack – where we have the pl/sql source – when we want to try and work backwards to the printed figures. Even then, as with your “Av Buf Wt(ms)” you also have to know that v$filestatxs is one of the view created by statspack and that the x$kcbfwait it references (which is not commonly documented) is the summary of buffer busy waits by file number – making the figures youthe fitur see the average buffer busy wait time by file.

Unfortunately, dependent on version of Oracle, you have to guess whether the buffer busy waits data (x$kcbwait and x$kcbfwait) includes or excludes the “read by other session” special case that was isolated in 10g; and then you have to cross check with the “Segments by Buffer Busy Waits” from v$segstat. Nobody does this type of analysis in a vacuum, so no-one has a list of the thousands of cross-referenced details that would be necessary to make it possible to automate the interpretation of the numbers.