Probably Bryant, as the ears of the monkey looks like on the signed #63.
This is similar art to the many Manhunter stories in Police Comics credited to Peter Riss on pencils. Notice the flying man getting a punch on the jaw, which can also be found in at least 12 Manhunter stories.
Originally credited "Jack Cole?", but the black eyes with a tiny reflection are by Gustavson.
Similar art to the Riss-credited pencil work on Manhunter stories in Police Comics (Quality, 1941 series) #37-#59.
Bob Hughes agrees on the Riss pencil credit.
The eyes of several characters are similar to Kotzky's signed stories in earlier issues. Uncertain inking.