https://www.thelancet.com/journals/lanpsy/article/PIIS2215-0366(19)30473-0/fulltext
The authors reported that clozapine was most efficacious in reducing overall symptoms (standardised mean difference −0·89 [95% CI −1·08 to −0·71]), and amisulpride was the most efficacious in reducing positive symptoms (−0·69 [–0·86 to −0·52])