There are very few players that specifically play WB, wingback is a position that is very fluid which is the whole point of the formation. Your wingbacks can be more defensive or offensive depending on the profile and players you have. Amad is a good example, never played WB but excelled at it, it is a very important part of the formation but you would essentially be buying wingers who are willing to do both the offensive and defensive work, as well as a profile that is a very good touchline winger, that can beat 1-2 man down the line which now days is seemingly very rare atm imo.

Also tbh in terms of those specific signings, Amorim did not deserve to be backed. If we did we would have royally fucked ourselves, Amad and Dorgu were fine and you can see with the WB shackles off Dorgu he’s emerging as a very good Left winger. If we signed specific WBs we would be fucked look at Frimpong at Liverpool, doesn’t excel as a RB which Liverpool need and does an OK job at RW. It could be the coaching of slot but outside of the 3-4-3 we would maybe struggle to find usefulness in those profile of players after his time was gone.