Gravito allows you to compare global vendor list versions. You can get specific details like which vendors were updated, added as well as deleted from the comparison tool
You can find the GVL comparison tool under the Features -> GVL Updates menu
You can choose the vendors by id or in general choose to filter based on which Vendors where added, updated or deleted from the tool.
Please note the dates and the version number of the Global vendor list when you compare between versions.