Nigga, each gen had shit designs and each gen had dope ass designs. I used to be a genwun fag but stopped being a basement dwelling dipshit and grew a brain.
Gen 1 Shit: Grimer, Voltorb, Tangela, Seel, Rattata
Gen 1 Good: Marowak, Electabuzz, Charizard, Alakazam,
Gen 2 forgettable shit: Stantler, Qwilfish (too cool 4 'u's), Corsola, Octillory
Gen 2 Dope shit: Scizor, Sneasel (practically all dark types), Crobat, Granbull
Gen 3 Shit: Plusle and Minum, Volbeat and Illumise, Castform, Huntail, Swalot
Gen 3 dope designs: Flygon, Shiftry, Ludicolo, Absol, Aggron, Nincada/Shedninja
Gen 4 Shit: Ambipom, Budex, Wynaut, Mantyke, Probospass
Gen 4 Dope shit: Gliscor, Gastrodon, Vespiquen, Yanmega (nearly all the new evolutions except Togekiss and Lickylicky).
Gen 5 Shit: Cubchu, element monkies, Reshiram (I don't like most legendary designs but it looks fucking stupid), Vanilluxe
Gen 5 dope shit: Scrafty, Cofagrigus, Haxorus (best Psuedo imo), Tirtouga, Volcarona, Chandalure
Gen 6 shit: to be honest not much I don't like, I don't like Aegislash but that's more of a competitive reason, Diancie looks like it's taking a South Park Bono sized shit. I guess Diggersby
Gen 6 Dope shit: Hawlucha, Trevenant, Dragalge, Clauncher, Malamar, Helioptile
Gen 7 shit: crabominable, Bruxish, Tapus, Drampa
Gen 7 Dope shit: Toucannon (best regional bird design), Salandit (should have had two different gender evos), Oricorio, Goliospod, Lurantis, Dhelmise, and nearly every Alolan form (except Persian) they even made the shitty design of Muk into a pretty decent one.