As useful as sites like these are, there is still no substitute for the encyclopedic Ashley Book of Knots[1][2], which contains every knot under the sun and then some (up to the time it was written -- and, to be fair, quite a few knots have been invented since then, but it's still an impressive tome).
[1] - https://www.amazon.com/Ashley-Book-Knots-Clifford-W/dp/03850...