1. Singed: I don’t have personal thoughts about laning against him since I play mostly Mid and sometimes as a Jungler or ADC.
I feel like his poison combined with Rylai’s Crystal Scepter and Liandry’s Torment deals damage but the slow is worse since he will keep slowing you while he is moving way more faster than everyone.
2. Graves: Graves is too annoying not because his damage, I prefer him to deal more damage instead having to play versus him who can blind you for an instant with just 1 ability... It seriously brakes the teamfights, even Nocturne’s Ultimate is not darkening your screen that fast... To be honest I prefer him to deal more damage If they revert his W.