It might help if you were specific about what you're trying to figure out. As mentioned, a lot of identifiers can use matchtext. Events can, and so can various commands. I don't see why anyone would need a comprehensive list of all commands that can do that, so there must be a reason for your question. What are you trying to figure out specifically?
if $ini(inifile,topic,nick) if $hget(table,nick) if ($var($+(badnicks.,nick))) if $fline (getting more exotic) ... there are plenty of possibilities... whick one is most suitable is up to your personal taste and the concrete issue
I don't think anyone here is going to spend the time to type out every mirc identifier and command that accepts wildcards. We aren't here to do the learning for you. I suggest going to your mIRC and typing /help, choose the index tab. Start reading at - and don't stop until you get to wma. Read about every command and identifier and think of what you could do with each one.
The thing is you're not asking a specific question.
There are lots of different identifiers that can take wildcards as input but it's pointless just listing them all because each identifier has a different purpose. For instance if you wanted to match a nickname it's no good knowing that $timer() can take wildcards.
If you have a specific problem then ask about that, but right now you're just asking for someone to reproduce the help file again, which is no good to anyone.
people love having their cake cut and serve to them instead of cutting and serving themselves.
But it is true that anything we would post is everything that is within the mIRC's help file. Treat it has a "bible" and mirc is your "religion" (in a non-offensive religioustically way)