'atcli feed show mutuals' and 'atcli list show "JS/TS Wien"' work: a name, or the last segment of a feed's address, is looked for among your saved feeds, then the ones you made, then by searching all feeds. Matching ignores case, accents and punctuation, and takes a prefix, some of the words or the letters in order. Two of your own that fit equally are an error listing them; of feeds found by searching, the most liked is read and the others are named. 'following' is your timeline, and feed show says which feed it read, as "source" in JSON.