I cannot rely fully to agencies who list ICO as most of them are paid. However, every ICO is special on their own. But, to have general ideas about different ICO this agencies the list may help.
The majority of them are getting paid to list the ico on their site. I heard that icobench charged 6 bitcoin to listed any scam coin with a good rating. it can't be tolerated because they are earning money by fooling us to participate in the token sale of scam ico. That's a thief.
There is a lot of similar thing in this internet right now.