When looking at organized or financial there really isn't anything helping you to expand to the point where organized can effectively reduce costs OR give you more tiles for cottages that financial can increase. Expansive, Industrious, and Philosophical also fall into this "improve existing" category.
Aggressive/Charismatic/Imperialistic and to a lesser extent Protective directly give you the means to acquire this land through military means (or quicker settling)
Spiritual and Creative are more hybrid in nature, with spiritual focusing on upward growth while creative focuses more on outward growth by helping you acquire and more quickly integrate land, although acquisition is somewhat more difficult (although culture flipping should be easier so this may equalize somewhat). Upward, creative helps somewhat by allowing you to run the culture slider and get happy and culture to expand already existing cities to higher population and land levels, albeit not as effectively as spiritual. Spiritual, with proper support, can raise happy caps quicker and without the culture slider and can switch between civics without cost to take advantage of opportunities to improve their military and building situation (most commonly) quickly.
Depending on the game and victory goals the "support" trait would be the one that is less important toward overall victory. Calling creative a support trait works if the goal is space but if the goal is domination then creative becomes a primary trait since the goal is to acquire more land. The support traits make keeping that land, without tanking your economy, feasible.
Now, all traits have some form of dual-role and can be made to both grab more land as well as grow/utilize already existing territory, but thinking of them in the as acquire/utilize is something that I haven't seen before (maybe I just haven't read enough) and seemed helpful.
Aggressive/Charismatic/Imperialistic and to a lesser extent Protective directly give you the means to acquire this land through military means (or quicker settling)
Spiritual and Creative are more hybrid in nature, with spiritual focusing on upward growth while creative focuses more on outward growth by helping you acquire and more quickly integrate land, although acquisition is somewhat more difficult (although culture flipping should be easier so this may equalize somewhat). Upward, creative helps somewhat by allowing you to run the culture slider and get happy and culture to expand already existing cities to higher population and land levels, albeit not as effectively as spiritual. Spiritual, with proper support, can raise happy caps quicker and without the culture slider and can switch between civics without cost to take advantage of opportunities to improve their military and building situation (most commonly) quickly.
Depending on the game and victory goals the "support" trait would be the one that is less important toward overall victory. Calling creative a support trait works if the goal is space but if the goal is domination then creative becomes a primary trait since the goal is to acquire more land. The support traits make keeping that land, without tanking your economy, feasible.
Now, all traits have some form of dual-role and can be made to both grab more land as well as grow/utilize already existing territory, but thinking of them in the as acquire/utilize is something that I haven't seen before (maybe I just haven't read enough) and seemed helpful.