If you cannot name the third wide receiver for the Cleveland Browns, it is not your fault, because the Browns did not use a third or fourth wide receiver in 2019. Extra wide receivers were almost invisible last year, due to a two-dimensional offense which featured only two wide receivers.
The good news is that the first two wide receivers were both outstanding. Jarvis Landry led the team with 1,174 receiving yards. Odell Beckham, Jr. was right behind him with 1,035 yards, despite playing all year with an injury that required surgery.