@dbarnett You might be able to glean some info from this: SELECT DISTINCT Name FROM BundleInstallationScript
You'll see the names of the installation scripts used by various bundles. Examples are "TaxJar Bundle Installation," "Celigo Shopify Connector Bundle Install," and so on.
It's not exactly what you're looking for, but again, it might at least give you a clue as to what has been installed. I hope this helps.