Don't think about the sources too much man, you already got great sources at your list. Which are good for getting info for new ICOs. My advice though is that don't rely so much on the basic infos you get on those sites about ICOs. Knowing the name of a new ICO is good enough info to absorb from these sites.
The rest? Research about it. Specially the developing team of the ICO tonsave time. And if the team is good or great, then proceed on reqding the amm thread of the ICO and them the white paper next. Doing these can guve you a lot of chance to get into more promising ICOs than scam ICOs.
Good luck.
Actually, I think the best way is to participate in bounty programs and get few coins/tokens in pre-sale and pick only ICOs which your gut tells you are good after investigating on their page and here. Okay, that was me thinking out loud