Here is a list of the different formattings of the opening credits that I just typed up...


Pilot
Roseanne Barr*
John Goodman
Laurie Metcalf
Sal Barone / Sara Gilbert / Lecy Goranson

Season 1
Roseanne Barr*
John Goodman
Laurie Metcalf
Michael Fishman / Sara Gilbert / Lecy Goranson

Season 2
Roseanne Barr*
John Goodman
Laurie Metcalf
Michael Fishman / Sara Gilbert / Lecy Goranson

Season 3
Roseanne Barr*
John Goodman
Laurie Metcalf
Michael Fishman / Sara Gilbert / Lecy Goranson
Natalie West

Season 4
Roseanne Arnold
John Goodman
Laurie Metcalf
Michael Fishman / Sara Gilbert / Lecy Goranson
Natalie West

Season 5
Roseanne Arnold
John Goodman
Laurie Metcalf
Sara Gilbert
Michael Fishman / Lecy Goranson

Season 6
Roseanne Arnold
John Goodman
Laurie Metcalf
Sara Gilbert
Michael Fishman

Season 7
Roseanne
John Goodman
Laurie Metcalf
Sara Gilbert
Sarah Chalke / Michael Fishman

Season 8
Roseanne
John Goodman
Laurie Metcalf
Sara Gilbert
Lecy Goranson
Michael Fishman

Season 9
Roseanne Barr Pentland Arnold Thomas (in first 3 episodes**) / Roseanne / Roseanne Thomas (as executive producer)
John Goodman
Laurie Metcalf
Sara Gilbert
Michael Fishman
Sarah Chalke

*In syndication, Roseanne is credited as Roseanne Arnold in seasons 1-3.
**In syndication, Roseanne is only credited with her full name in the first episode of season 9 "Call Waiting".

you forgot:

Pilot

Roseanne Barr
John Goodman
Laurie Metcalf
Sal Barone, Sara Gilbert, Lecy Goranson

and season 8 is

Roseanne
John Goodman
Laurie Metcalf
Sara Gilbert
Lecy Goranson
Michael Fishman

i think the episodes after "Homecoming" in season 6 (where Sarah Chalke first appear) use the season 7 intro, so they would be

Roseanne
John Goodman
Laurie Metcalf
Sara Gilbert
Sarah Chalke, Michael Fishman