The only remotely interesting thing about this puzzle was my (American) wife’s horrified reaction to the thought that anyone would regard 19a as “of a kind” with the othe unclueds. It would take nothing short of a Constitutional amendment to make that true.
For what it's worth I read the wordplay for 40 across as an anagram of 'Call me this in' minus 'Clint'. I agree with the comments re 19 across and the opinions expressed about the puzzle itself.