#4 Did not benefit - Liv Morgan

Of all the members of the Riott Squad, Morgan is the one who needed the group the most. Ruby Riott was an established singles star before the group was formed for the main roster.
Riott's great in the ring and has an alternative look to the barbies like Mandy Rose and Lana. Sarah Logan actually wrestled in a lot of death-matches before even signing with WWE but held her own on NXT.
Logan was the muscle of the Riott Squad and is someone who could stand alone with her own gimmick.
Morgan was new to the sport when signed to NXT, but a lot of superstars start out that way nowadays.
She took a lot of seasoning in NXT and didn't seem like someone who was ready for a main-roster call-up back when the squad debuted.
But putting her with the group was like when Roman Reigns was placed with the Shield - despite not making a name on the indie scene he'd be able to grow as a performer and learn on the job with the more experienced Seth Rollins and Dean Ambrose.
Separating Morgan from the group hurts her more than the others because she is the least technically ready member of the group.
Maybe she grew leaps and bounds over the last year, but it would have made more sense for it to have been Logan or Riott due to their experience.