Mack was a transfer. The three you mentioned are good, but the batting average is kind of low.
2015 - Henderson (great on ST; not and good receiver), Tipton, and Ivery
2016 - Mathews and Flowers
2017 - Street, Smith, Butler-Jenkins
2018 - Shocky and O'Neil
2019 - Gipson
2020 - Barden (I think they experimented with both DeShields and Henningham at WR)
2021 - Alston and Bradley
So like 3 good ones out of 17? I won't count the '22 guys, yet.
A couple of those guys (Mathews, Henderson, etc.) weren't bad by any means. But not really difference makers at the position. At least not their pass catching.
But yeah... if you count the transfers, you can add Mack, DJ Turner, Lopes, Means, Mumpfield, etc. Overall, those guys count. But I'm only talking about recruits in this specific instance because we're talking about the odds one or two of the four 2023 guys can step in this season.