Well, there is a more or less comprehensive list here.
https://medium.com/@reviewcryptos/ultimate-ico-checklist-how-to-check-an-ico-3585ce3408c7

This post is okay, too. https://medium.com/birds-view/cryptoassets-a-crowd-sourced-evaluation-due-diligence-framework-98b921c82731
But. The spreadsheet cites Argon Group as "best in class service provider". The guys who did Blockchain Capital, lol.