NFL teams like the Titans, Chiefs, and Panthers are evaluating undrafted free agents during training camps. Titans signed Cole Spencer, an older rookie, to a notable deal following extensive research. Chiefs are considering undrafted players like Emani Bailey and Carson Steele for their roster due to their unique skills. Panthers are focusing on rookies like Jonathon Brooks and Ja'Tavion Sanders, with expectations and pressure varying based on their performance in training camp.