I suggest you checkout ICObench. It's a site that collates reviews about ICOs and rates them too. They're pretty useful.
ICO ratings cannot be trusted because they can be payed to have a good review on their website. The best thing to do is to do your own research and don't be lazy because it is your investment.
Some web-pages, comparing ICOs are declaring that they are not providing paid ranking for ICOs. What do you think, are they trustworthy?