
James G. answered 06/21/19
Experienced Spanish Instructor
There is not that much variation in official Spanish spelling. The Real Academia Española (http://www.rae.es/), which includes linguists from around the Spanish speaking world, standardizes everything. There is not an equivalent to this in the English-speaking world. Spanish pronunciation is also much more phonetic than English, so there is not much room for variation. Some noted exceptions are words with native origin, or old or midieval-Spanish spelling that remains, despite adaptations over time
For example, the you will sometimes see Spanish speakers spell "México" as "Méjico". The RAE will recognize both spellings, although they strongly recommend using the "x" , which in midieval-Spanish made the /x/ sound, even though most speakers of modern Spanish pronounce the "x" with a /ks/ sound.
That does not mean there is no room for Spanish speakers to make errors, and outside influence from other languages can impact those errors a lot, especially among Spanish-speakers living in the US! However, unlike English, the RAE keeps things fairly well standardized.