That pic of Yngwie above…. The fretboard isn’t scalloped.
If you read his Auto-Biog he says he's not influenced by them. If you read the unofficial Biog it states he was obsessed with Uli and Blackmore. People tell stories of him copying these guys heavily in the late 70s in Sweden, buying the clothes, amp, guitars, scalloping etc.
The only guitarists that he openly compliments are guitarists that are far from his world. Like Al De Meola and Alan Holdsworth.