The IOMFHS burial register for Andreas only covers a few yrs but has all the yrs you're interested in.
There is NO additional info on any of the Johns except the one buried 18 Feb 1812 listed as BALLAJOCKEY

There is no burial listed for Jane Quark Christian 12 Mar 1803
There is one for Jane Quayle Christian 3 Dec 1803 which is noted to be in Rushen on Brian's index
Perhaps one of them is a transcription error--would have to check the actual film.

There is only ONE MI out of that long list you gave for John Christians

Andreas
Old Yard
G 14
Erected to the memory of JOHN CHRISTIAN who departed this life the 8th of May 1826 aged 74 years

This grave is in a series of CLEATOR graves mostly 1850 on. If this proves to be of interest I can copy those MIs

Donna