In my book:
Aquatic: fresh fragrances like Lacoste Essential, Lacoste Cool Play, Acqua di Gio, and I guess most of the male Jil Sander scents.
Citrus: fragrances smelling foremost of citrus fruits, or similar notes that are not extracted from citrus fruits in a strict biological/botanical sense. Examples would be M7 Fresh, Concentree d'Orange Verte, Eau d'Hadrien, and to some extent Guerlain Vetiver and Terre d'Hermes.
Of course there may be hybrids, and Happy may be one of them.