The Nova Group included eight different marbles that were made in 1988 by Peltier.
The first two pictured have different characteristics (Narrow bands and a Swiggle) which disqualifies them as Novas.
The only Official Names are
Nova (3rd over at the top.)
Root Beer Float (2nd over at the bottom)
Pink Champagne (Last on the bottom).
None of the others were given names.