[Black Fang]

I've been rewatching ToQger as of late. As one who's a fan of trains, I've never gotten over how bad the Ressha designs are. It makes me wonder how they might have looked like if they hadn't been forced to accommodate the changer insert-color transferring gimmick. Is there any material out there that says what specific real-life model of engines the ToQ-Oh components were designed after? I know Blue and Green are bullet trains and Yellow and Pink are subway cars. I need the names of models or types (For example, GG1, K4 Pacific, 4-4-0 American type, etc.)