Simile, Metaphor or Neither?

"Her skin glows like the moon at nighttime"

"The furniture is gorgeous"

"Alex is as tall as Rachna"

"He's got fire in his belly"

"He's as cool as a cucumber"

"It's ten miles to the station"

"I was on a rollercoaster of emotions"

"The twins' eyes are a silvery blue"

"I'm as serious as death itself!"

"She's got a really bubbly personality"

"James looks a lot like Phil"

"They were glued to their seats watching 'Stranger Things' on Netflix"