I've setup x.domain.com like a catchall for misspelled subdomains on my small server. For example, I would like partners.domain.com to rewrite to partner.domain.com. I'm getting a hard time determining steps to make many of these rewrite rules. In my opinion my brain does not correctly think inshtaccess, but things i only desire to have to say is "when the url is partners.domain.com, rewrite to partner.domain.com". I most likely have about 20 approximately of those rules to create, for various misspellings which have no specific pattern (as well as for a variety of subdomain).

I appreciate the assistance!

You'd desire to make one of these simple for every mispelling:

RewriteCond %{HTTP_HOST} ^partners.domain.com [NC]
RewriteRule ^(.*)$ http://partner.domain.com/$1 [R=301,L]

give a "QSA" within the square brackets within the RewriteRule line if you wish to redirect and preserve any GET query parameters: [R=301,L,QSA]