It's a tough question to answer. It can be discussed subjectively or attempted to answer statistically. Someone used basketball-reference and broke it down by the VORP (value over replacement player) stat as the best all-in-one statistical measure. However, this has the unfortunate side effect of cutting out players from before 1973 (that was the first season that VORP has calculations for). The following table excludes players who have played for less than 6 seasons, as they maybe haven't had the opportunity yet to lead a team (this took out players like Donovan Mitchell and Nikola Mirotic).
Here are the top 10 players in VORP per season who have never led a team in VORP.
Player Seasons Career VORP VORP Per Season
Kevin McHale 13 34.3 2.63846154
Draymond Green 8 19.7 2.4625
James Worthy 12 29.1 2.425
Dan Majerle 14 29.7 2.12142857
Detlef Schrempf 16 33.2 2.075
Horace Grant 17 32.8 1.92941176
DeAndre Jordan 12 23 1.91666667
David West 15 27.6 1.84
Sam Perkins 17 31.1 1.82941176
Klay Thompson 8 14.1 1.7625
Some notes:
Stockton and Ginobili don't show up. Ginobili apparently led the Spurs in VORP in 2008 (All-NBA 3rd Team and 6 VORP to Duncan's All-NBA 2nd Team and 4.8 VORP) and 2011 (All-NBA 3rd Team and 4.5 VORP to Duncan's 3.5).
John Stockton had 4 years of being the team VORP leader.
1988: All-NBA 2nd-Team with Malone (7.6 to 2.9)
1989: All-NBA 2nd-Team, but Malone got 1st Team (8.3 to 5.9)
1995: All-NBA 1st-Team with Malone (7.9 to 6)
2002: Neither made All-NBA, but Malone was an All-Star (4.8 to 4.4)
In terms of active players, Dray and Klay have spent their entire careers with Steph, while DeAndre Jordan was always in the shadows of CP3 & Blake Griffin.
Kevin McHale spent his all but his rookie and final seasons flanking Larry Bird. The best case McHale has is the 1989 season when Bird only played six games.
McHale was All-Defense 2nd Team, averaged 22.5 points and 8.2 rebounds on 56.5% shooting, and accumulated 3 VORP
Robert Parish was All-NBA 3rd Team, averaged 18.6 points and 12.5 boards on 58% shooting, and accumulated 3.8 VORP
James Worthy's entire career (save one season) overlapped with Magic
both of Worthy's All-NBA 3rd team selections coincided with a 1st Team selection for Magic
the one season without Magic, he was the singular all-star for the Lakers but point guard Sedale Threatt (15 points and 7 assists) led the team in VORP
Detlef Schrempf didn't really get going until his fifth season in the league
Schrempf spent all four of his Indiana seasons beside Reggie Miller and all 6 of his Seattle seasons flanking Gary Payton
He was All-NBA once with the Sonics, but his 1995 3rd team was overshadowed by the fact that Kemp and Payton were both 2nd team
Horace Grant spent the majority of his prime with the Jordan Bulls and Shaq Magic
His only all-star appearance was in 1994 (the first year of the first Jordan retirement), but Scottie Pippen was still on the team and picked up a 1st team All-NBA selection
The next best chance for Grant is 1998. Shaq had left in the offseason and Penny Hardaway only played 19 games.
Grant averaged 12 points and 8 rebounds shooting 46% from the field
Nick Anderson led the team in scoring with 15.3 per game shooting 45% from the field
Bo Outlaw averaged 9.5 points, 7.8 rebounds, 1.3 steals and 2.2 blocks while also leading the team in VORP
Sam Perkins was never an All-Star
He spent his first 6 seasons with the Rolando Blackman & Mark Aguirre Mavs, 2 seasons with the Lakers (the first with Magic and Worthy, the second with just Worthy) and the rest of his prime with the GP & Kemp Sonics
Dan Majerle had 3 All-Star seasons, two of which overlapped with Charles Barkley
both Majerle (17/6/3 on 48% FG and 38% 3P) and Jeff Hornacek (20/5/5 on 51% FG and 44% 3P) made their first All-Star Game in 1992
David West spent all 8 of his seasons in New Orleans as a CP3 sidekick, the first season of his Indiana tenure as a Danny Granger running mate and his subsequent Indiana seasons in a supporting role to Paul George.