In general Wikipedia articles should be titled with the most standard name for something in use in publications for general readers, or arguably in scientific publications   not what is, or an editor decides is, the most logical, modern, politically correct, etc. In all cases any variants of a name/term in use should be given as alternates in the article text. If they are very common alternates they should be given immediately after the most standard form at the start of the article. If less common alternates they can be mentioned somewhere later in the intro, or in an etymology section.

 Muscogee is probably the traditional English spelling; I'm finding both the Oxford American English Dictionary and Ethnologue use Muskogee; what was the article titled previously?  we don't even know from the current text.