That’s pretty awesome 
Maybe you can look for the keys for the values, this is what the table looks like
What you might want to consider though is that some people use up to 80 mods and some of them might be over 1GB 
So parsing through them all just to look for map names every time might be a bit of an overkill
If that presents any issue, I’d probably try to mix options 1 and 2 from your list and look at all db files, strip the _backup_# from their names (since that’s hardcoded anyway) and maintain a possible db list based on that.
A potentially easier option if you want to get the map filename back is to actually open them and do a quick query on those databases
Then you can even name them accordingly without having to parse through a million mods. It’s not the “pretty name” that you have in the table, but it’s a start and it’s the exact filename of the map itself