To me, Electrode, Magmar, Slugma, Mightyena, Linoone, Lunatone, Crawdaunt, Chatot, Snover, Gulpin, Swalot, Rhyhorn and Sandile sounded the same right now as in the past.
There were also some Pokemon whose cries didn't need to be changed, IMO, like Rhydon, Ducklett, Persian, Mankey, Magneton, Onix, Nuzleaf, Swablu, Volbeat, Illumise, Bagon, Bronzong, Breloom, Loudred, Hariyama, Delcatty, Magnezone, the elemental monkeys, Woobat, Audino, Gurdurr, Conkeldurr, Scraggy, Gothorita, Reuniclus, Karrablast, Escavalier, Galvantula, Klinklang, Chandelure, Fraxure, Haxorus, Rufflet, Deino, Volcarona, Palpitoad, Throh, Sawk, Venipede, Petilil, Krokorok, Krookodile, Croagunk and Toxicroak.