Looks like loose leaf lettuce on the bottom (the bright green, curly edge leaves), and there are cut strips of dried kelp or seaweed on top (the rectangular shiny bits) along with sliced green onion (the round ones).
I agree with escarole, it has a slightly brother green and leaf texture.
The op must establish if the leafs were slightly bitter or more neutral flavored.
The stuff on top is called nori (dried seaweed) and they've cut it into strips, along with some green onion and sesame seeds.
On the bottom looks like a mix of lettuce and arugula, wouldn't be surprised if they're using a prepackaged spring mix or similar
On top is the furikake you already know, and green onions/scallions
Looks like shiso to me
I could be wrong but my guess is the bottom layer is green leaf lettuce, and the more jagged one looks like arugula.
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