Huge. Hendrix influenced virtually every guitarist past and present.
Both SRV and Mayer were massive fans of Hendrix. SRV covered both Hendrix’s Little Wing and Voodoo Child and Mayer has covered Wait until Tomorrow, Wind Cries Mary and Bold as Love.
EJ was also very influenced by Hendrix.
So was Steve Vai.
and Joe Satriani.
and Yngwie Malmsteen.
and John Frusciante.
and Joe Bonamassa
and Joe Perry.
Paul Gilbert did an entire CD covering Hendrix.
and David Gilmour.
Brian May even paid for him to play at his university
Hendrix and Clapton were influenced by each other. It’s notable that Clapton changed to using Stratocasters almost exclusively after Hendrix’s death
Jimmy page had high opinions about Hendrix too.
same with Jeff Beck.
Ritchie Blackmore said Hendrix inspired him.
Billy Gibbons was floored by him
and Kenny Wayne Shepherd.
Keith Richards was astonished by Hendrix.
Pete Townshend said both he and Clapton were in awe of Hendrix like schoolboys
I think the only guitarist I know that definitively did his own thing separate from Hendrix was Eddie Van Halen: