They're not 5 , but I'll try to put them in 5 categories as they are in my mind.

Vai & Satch
Page , Hendrix , SRV , Clapton , Gilmour , Knopfler
Jason Becker & Marty Freidman
Slash , Hammett , Zakk Wylde , EVH , Dimebag , Lynch
Petrucci , Gilbert , Romeo , Angelo , Malmsteen