Kirk – even though Starfleet recovered his body, he’s actually still in the Nexus. And while he would see Edith Keeler, and Carol and David Marcus, he would really be back onboard the Enterprise.
Spock – child with Saavik; the child goes to lives on Romulus (as the child is ¼ Romulan) and is one of Spock’s secret motivations to get involved in the Romulan reunification movement (the others are related to a disagreement with Sarek regarding the Cardassians, and his relationship his Chapel (see below)). After ending up in the Kelvin timeline due to his failed attempt to save Romulus, he passes and his katra is currently in Kelvin Spock, and may have been shared among the crew of the Kelvinverse Enterprise (and contributed to a wildly divergent timeline from the prime timeline). He also has a statue of himself on New Vulcan in the 23rd century that’s still standing in the 52nd century.
Bones – Bones’ daughter Joanna married the son of Ann Mulhall, making Bones the grandfather of Doctor Katherine Pulaski. Bones passes shortly after the end of the Dominion War, with friends and family around him.
Scotty – after years of navigating the stars, Scotty chose to reside on a regenerative world and still alive in the late 32nd century and looks like how did circa 2259.
Sulu - gets promoted to Admiral and is the C-in-C Starfleet Command as of 2311, and helps to cover up the Tomed Incident with Admiral Harriman and Section 31 agent Valeris. But took a demotion to return to captain the Excelsior and patrol the Cardassian border with Captain Saavik. He also sponsored a number of cadets - including Chakotay - into Starfleet Academy, who later play a role in major events from the Battle of Wolf 359 to the Romulan evacuation to the Frontier Day Attack.
Uhura - captains the USS Leondegrance. She never had children, and never felt the need to have any. She later heads up Starfleet Intelligence and passes by the 2350s.
Chekov - marries Irina Galliulin after finding out about his son Anton. Chekov leads the charge to resettle the El-Aurian refugees across the Federation, and later sits on the Federation Council. Chekov later succeed Uhura in heading up Starfleet Intelligence, and passes by the 2390s.
Rand - becomes the first officer of the Excelsior, serving under Captain Demora Sulu in the 2310s. Also worked with Dr. Gillian Taylor to translate the whale language, which allowed whales to serve onboard Starfleet ships in the 24th century.
Chapel - After a stint as Surgeon General of the Federation, and being an aide of Ambassador Sarek, Chapel gets with Spock after all and they stay together until her passing in the early 24th century.
M’Benga – captains the Federation hospital ship Hopeship. Is stabbed by Klingons while prepping for a mission of mercy to Bajor and later reunited with his daughter.
