In fact, I could get by if the calling alias, rather than being recognized by the called alias, rather can recognize its own name. For example,

In the remote "alias_customA.mrc"
alias customA {
   customB $myOwnFileName

and in the remote "alias_customB.mrc"
alias customB {
   echo -a $1-

The difference here rather than what I asked at first is that the alias can tell the called alias through text what it's own name is, and running alias customA will echo "alias_customA.mrc"

And so it goes on. I will keep looking around, and thank you guys for your help.