The ones whose English names are actual non-punny non-manipulated words? Alakazam, Gloom, Persian, Golem, Electrode, Ditto, Magneton, and Mew. And arguably Mr. Mime and Mime Jr. I can't think of any others.
Though my spellchecker doesn't like Alakazam and Magneton, they are real non-manipulated words.
Creator of Jay's Journey (see quote!) "It's not ten years old! Therefore, it sucks!" - Nostalgia whores everywhere