Hi. I identified a few others for you. I've been collecting golf autographs for 45 years and can recognize many of them.
To the left, under Loren Roberts, is Graem Storm from England and down in the middle is Steve Pate from USA. Both of them participated in The Masters 2000. The last two, not yet identified, seems not to have signed as they usally do. I have checked the whole list of competitors that year.
Einar Kull, Sweden