Hmmm, I also love UJSLN and I love some of the green florals you mentioned, but would not necessarily say that they remind me of each other. Nil is kind of a Franken-fume with bits and pieces of multiple scent-genres re-animated into something truly unique. It has citrus--the grapefruit opening. It has fruit--the unripened mango. It has oriental qualities--the incense and dry woods. It has fresh, aquatic qualities--the wet tone and the lotus/calamus accord. And it has some green floral qualities, but I wouldn't call it a green floral like Chanel No. 19 or Ma Griffe or Chamade.
That said, lighter orientals with citrus may be the way to go. Check out Shalimar Eau Legere, Shaal Nur, and Habit Rouge. Eau Sauvage, Diorella, and Cristalle edt might be worth trying too because they have citrus and light chypre-accords and musk. Terre d'Hermes might be another JC Ellena scent to check out beyond the Nil, Mousson, and Mediterranee Jardin series. Good luck!