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Gyūdon (牛丼)
Gyūdon, literally beef bowl, is a Japanese dish consisting of a bowl of rice topped with beef and onion simmered in a mildly sweet sauce flavored with dashi (fish and seaweed stock), soy sauce and mirin (sweet rice wine). It also often includes shirataki noodles, and is sometimes topped with a raw egg or a soft poached egg (onsen tamago).
Tentamadon (天玉丼)
Tempura which simmered with beaten egg and topped on rice.
"Ref: https://en.wikipedia.org/wiki/Donburi
London (ロン丼)
Lettuce, Onion, and Nectarine topped on rice, I guess.