Reading the ratings from Weiss, I can tell right away these people have no idea what they are talking about. I spent almost all my time totally immersed in crypto since mid to late 2013, creating crypto communities with around 120k people, and I have worked on several cryptocurrency projects and know countless developers personally, and I talk with blockchain devs daily as I work with them.
I will only comment on projects I have researched, if I have not, I will skip them as it takes a lot of time to properly research.
BITCOIN A (Started the entire revolution, currently the entire ecosystem depends on a healthy Bitcoin, many believe the Bitcoin devs are the best Blockchain devs)
ETHEREUM A (Much of Coinmarketcap is ERC20 Tokens, that is all ETH, massive Network effect that will be almost as hard to overcome as Bitcoin)
RIPPLE C (Not really a cryptocurremcy or decentralized, but giving it a grade anyway...)
BITCOIN CASH F (Brand Heist contains most all value - what would the price be if it was called just Bcash?)
CARDANO C (Could be A after release, right now just ERC20 token, has potential)
STELLAR B (Slightly more decentralized version of Ripple by the original founder that had issues with Ripple Labs and broke away)
LITECOIN A (The first fair launched Alt coin with countless immitations)
NEO A (Strong China angle, and China will likely go pro crypto sooner or later)
EOS B (Still just ERC20 Token, but lots of potential)
NEM A (Strong demand in Japan)
IOTA C (Tech uncertain, very early and risky, I would not use their wallet and that is saying something)
DASH B (Lots of original tech evolved from Quark, has the instamine, but for those that don't care it is a good project, for those that do, avoid)
MONERO A (Perhaps the best privacy coin forked from Bytecoin, community of trolls, but they have a point now and then)
TRON F (They blended some white papers, stole a name from a movie and added some hype)
VECHAIN A (Masternodes like DASH with a strong use case for the blockchain for authentication and tracking, great partnerships)
BITCOIN GOLD F (Just another garbage brand heist, you can profit, but this coin has no point other than "free money.")
ICON A (Sort of like a NEO for South Korea, and with very interesting tech)
QTUM F (This is by the Bitbay scam dev, a notorious scammer with many aliases. This is a SCAM just based on it being by a scammer, far as I am concerned)
ETHEREUM CLASSIC D (This was created because of stolen funds being hard forked away on ETH, if you believe otherwise you are a naive fool that black hat hackers used to cash out their coins)
LISK D (This was based on Crypti that had no adoption and was already "dead," they lied about a partnership with Shapeshift during the ICO so I find them dishonest and rate them accordingly)
OMISEGO A (One of the most promising ETH projects)
STEEM A - (Has strong network effect)
ZCASH A - (Great team and tech, one of the best anon coins,, some do not like founder rewards, but it is a way to pay devs)
VERGE B - (I know the dev, take that into account as I consider him a friend, and the market cap is quite high. Although I wish him the best and a very high price is a good problem to have)
BINANCE COIN A - (I had my doubts, but they have proved themselves so far and many are copying their ideas now)
End of Part I - If people like this, I will do the rest as I already have the information in memory. Disclaimer, to a point this is personal opinion and not financial advice, and if I have a bias on the coin I will also state it. Lastly, I only hold a couple of these projects (Part I) as the price is already high on most of them.