You can also try to see it from the point where you make the decision 1st time, since I was not following any guides or didn´t check any spoilers I made a reasoning like (I ended with Star in 1st walkthrough):
-Commit suicide: V is already tired of keep fighting, don´t see hope and don´t want to risk anybody because he/she doesn´t think there is a chance of surviving. It conflicts with the tone of "never give up" presented in-game, but you can also think that indeed life sucks.
-Call Hanako: basically you put your fate in a promise by an Arasaka heir that was educated to follow Saburo vision. At this point of the game, it kind of beat me why anybody would trust Arasaka at all but is a decision (and Johnny is quite strong advising you against) that you as V can make (I bet many people choose that just to show the middle finger to Johnny).
-Call Panam: in this V decides to don´t follow Johnny advice, and trust new friends/family (putting them at risk). Is kind of rebuilding hope after all you went through the game that puts you after the Heist as somebody without family, with Jackie dead .
-Call Rogue: here you are giving the option to Johnny to recreate his assault in 2013 to Arasaka with Rogue, felt more like a Johny decision than a V decision. You decide to don´t trust those who offered help and go the "professional" way,Johnny mentioned in the past that even his friends "couldn´t stay in the same room as him" so its not surprising that you might end alone at the end.
Even if you would have died there, you would have died as Johnny not V (and you didn´t know in advance that you were going to survive) which I was not willing to do.
Also remember that Misty (I love that character), before taking a decision kind of warns you against being a "Legend"... it was what Jackie wanted, and you know how he ended.
In suicide/Hanako/Panam cases I would say that its V who is in control the whole time, in calling Rogue I felt that V was being used (one more time) by Johnny to get his revenge.
If the story is meant to be V's story (looks like Relic+Saburo, with V as unwillingly protagonist); suicide/Hanako/Panam decisions fit better to me as V than calling Rogue.
Which one (if any) wll be canon, no clue. I would say "star", since it seems that is the one that keeps V in good terms with all NPCs, is the one where Rogue doesn´t die at all and you frustrate both Saburo and Yorinobu plans (Yorinobu was not counting with a massive economic loss at all, he is still in control). They can do re-writings and merging if they want, but they have some world insonsistencies and some NPCs need to die/resurrect/change how their relationship with V is.
secret ending seems like the way in which V is supposed to approach the sun ending.
Sun ending via rogue path is essentially a gift to V from Johnny. The big success he is being rewarded for isn't quite earned. Johnny is the one to choose if V lives or dies. This sort of works for the legend motivation of ending, because perhaps V feels he hasn't earned this success he is living, but it is as you say, not really Vs choice.
It comes together very differently from secret ending, in which V takes control of the situation, risks big, and wins big. He is then in the driver's seat in mikoshi, he makes the decision to stay alive, he says he wants every moment of life he can get, and Johnny tells him never to stop fighting as he goes into the well. This frames the scene very differently, and makes it seem less likely V is suicidal. It comes more together as V never quitting, going big, and risking as few people as possible. Which lines up well with secret ending.
oh yeah, rogue lives, and V is on good terms with all npcs, if you were on good terms with them when you end the game if you do secret ending.