Having viewed all the Angel lefties who were non-major leaguers in spring camps during the 1973-1985 period, the best guess I can come up with for KF 197 & 198 is Chuck Gibbon. He was a non-roster invitee with the Angels in 1976.
My only exemplar of Gibbon is a poor quality photo from the El Paso Herald Post of April 14, 1976. It shows him when he was with the El Paso Diablos. From the photos, it appears as though he could have the same full eyebrow line across his face as our unidentified players, but it's hard to tell. The facial structure appears similar.
Chuck Gibbon Minor Leagues Statistics & History | Baseball-Reference.com