Gligarto evolve into Gliscor. Sneaselto evolve into Weavile. Swinubto evolve Piloswine into Mamoswine. Togeticto evolve into Togekiss Since Magnemite, Rhyhorn, Electabuzz, Magmar, Eeevee, Aipom, Yanma, Murkrow, Misdreavous, Sneasel, and Swinhub nest, you're better off grinding them for candy ...
What Pokémon you can find in a Mass Outbreak all depend on where it is taking place. Only Pokémon that naturally spawn in that area have a chance of creating a Mass Outbreak, and you can always tell what Pokémon you will find based on the icon for the outbreak you see on the map....