Thank you for the question. The "Creole Guards" was certainly not excluded as an organization. However, the entire brigade evidently didn't get called into service. Here's an article from the Mobile Advertiser and Register, Mar 5, 1862:

March 5, 1862:

OUR NEW VOLUNTEER REGIMENTS – Two new volunteer regiments, under the inspiration of the late appeals from the Brigade Headquarters, have completed their organization during the present week and are to be immediately taken into active service. The order to this effect was received by General Butler from Governor Shorter yesterday. These regiments are officered as follows:

Second Volunteer Regiment – Colonel, J. H. Higley; Lieut. Col., P. J. Pillans; Major, A. W. Lampkin.
Third Volunteer Regiment – Colonel, John Forsyth; Lieut. Col., Wm. A. LeBaron; Major, P. K. Irwin.

As part of the 9th Brigade A.M., they will, of course, be under the command of General T. J. Butler, who has already accomplished so much in the way of organizing our militia, and, like the rest of the Brigade, is specifically organized for the defense of Mobile. These regiments are not quite full, and they offer a very favorable opportunity for persons in the militia service to obtain desirable places. They are composed of excellent material, are well uniformed, are provided with arms, and will soon constitute a corps to which any man might be proud to belong.
As these regiments are ordered into immediate service, the men will at once draw pay and rations from the state, while their duties will not call them any distance from their homes.
With such inducements we expect soon to see these regiments filled up to their full compliment, and worthy at a place beside the best Mobile has sent abroad for the war.

There are June 1862 Confederate pay receipts for officers of these two regiments, but not the "Creole Guards." BTW, "full" in this case means eight companies.