Some of the network sites have names like Seasoned Advice which don't inherently represent their content. I was trying to remember the name for the 'Cooking Stack Exchange' and couldn't find it by searching for
I think this quickly becomes frustrating on mobile.
My suggestion is to add some keywords that aren't displayed but are indexed in addition to the name and description of each network site.
Some more examples:
linuxdoesn't list the Ubuntu site
arcadedoesn't return the Arqade site
bikedoesn't return the Bicycles site