That is useful info about the set up of Catholic church in the 1800s. That level of knowledge always help inform the conclusions we draw.
I have similar batches of Confirmations which seems to have been done by a Right Reverend Alexander Paterson and then later by Right Rev and Dr James Kyle. They were done in 1818, 1821, 1825 and 1830 (haven't looked at later ones yet). I think mine are fairly evenly matched for men and women. It is from these entries that state "AD 1825" that I can see the capital A and D are the same as the mark next to one of the missing names in the 1824 Status Animarum. So I am drawing the conclusion that it stands for adultery and daughter in same way as they record bastard son.
From checking dates of the listed family member confirmation and comparing to the marks on the SA, I think that 'Com' is actually 'confirmed' and 'not Com' is then not confirmed. The C with a dot symbol is probably communion. Seems the wrong way around, but Paul Stuart was confirmed in Sept 1825. On the 1824 Status Animarum he has the C dot, but not the Com, whereas on the 1828 Status Animarum he has both. May never know for sure. But it has helped me work out that I have 2 separate daughters - Elspet and Elizabeth/Betty. I never thought one parent would give such similar names to daughters, but actually I have since found these two names in other families too.
Could they have received communion without being confirmed??