Rhipsalis species I believe.

thanks for that latin name, i've always called it pencil plant : )

Euphorbia tirucalli or Pencil cactus.

Definitely a rhipsalis of some sort.

Maybe something like R. teres, aka R. capilliformis. Long growth followed by a bunch of shorter stems on the end. Easy to root. Like humidity, shade in the summer. Rhipsalis species are hard to ID sometimes because the shape they get depends somewhat on cultural conditions.

Definitely a Rhipsalis, an epiphytic cactus that that requires lots of drainage. They do well in Sphagnum baskets and even slatted baskets lined c Sphagnum.
Your variety gets lovely red berries during the summer months, after blooming in the Spring/ Summer