Claudius I will add in those names you intentionally left out.
Akpom have had a very decent scoring rate for Ajax despite being played on the wings after the championship season. You missed out Carlton Morris who have a decent record in the PL as well after being promoted.
Toney is proven, Solanke is proven, Pukki have 22 goals in 60 apps for bloody Norwich in PL. Mbeumo is proven, Watkins is proven, Mitrovic has 15 goals in 28 starts, Abraham scored 27 goals for Roma the season after being top scorer in championship. We all know about Chris Wood and his super season for Forest, Andre Gray 10 goals in 36 apps for Watford in PL, Deeney has double digits goals scored in every season bar 1 for Watford in PL. We all know about Vardy.
This is beside the fact that after they got promoted, they are playing for struggling sides that barely scores any and yet they score most % of their team goals before some got relegated again. It's proven that most of the strikers who scored plenty in the 2nd tier translate their goals when they get promoted or if they get sold elsewhere in other leagues. Not to mention Gyokeres has been scoring goals for fun for Sweden, Sporting (2 seasons running) and in UCL. He has every chance to be successful anywhere else than being an outright flop.