I want to use lyrics from songs (Neil Diamond, Barry White ect.)on my
products. I need to know what type of lawyer to use and exactlly who
and how to contact the right people on the musicians end.

You need a copyright attorney.  You may also want to contact
VLA Volunteer Lawyers for the Arts.  This is their website:

http://www.vlany.org/

The hard part of this is finding out who owns the copyrights.  If you
were interested in performing the works then you would call ASCAP.  If
you were interested in making a CD compilation of the works you would
call Harry Fox (http://www.harryfox.com/faqs_detail.html?category=General+Information).
 To obtain a license to use lyrics requires you to find out who owns
the rights to the songs in question and contact the copyright
owner/publisher to negotiate a license.  For example, I looked up
"Cracklin' Rosie" by Neil Diamond on the Copyright Office web site
(http://www.copyright.gov/records/) and it appears that the copyright
to the lyrics is owned by Neil Diamond.  This is what the records
show:
Registration Number:    RE-771-941  
Title:    Cracklin' Rosie. 
Note:    Words & music. 
Claimant:    [Author and claimant] Neil Diamond [Author] 
Effective Registration Date:    2Jan98 
Original Registration Date:    2Sep70; 
Original Registration Number:    EU202521. 
Original Class:    E 

Further research shows the song originally appeared on his 1970 album,
"Tap Root Manuscript"
(http://home.netcom.com/~zmoq/pages/ndalbum2.htm) published by Uni
Records (http://www.geocities.com/SunsetStrip/Balcony/2965/uni.html).
Thus, to get license rights to reproduce the lyrics you'd need to
contact Uni Records (but they apparently no longer exist) or Neil
Diamond directly.  It appears Diamond now records under the Columbia
label, which is owned by Sony
(http://www.neildiamond.com/index3.html).  So, I would try to contact
Columbia Records about negotiating a license to use Neil Diamond?s
lyrics since it is likely they acquired rights from Uni or its
successor.  You may have to repeat this same exercise for each artist.
 Good luck and good hunting!

Except in rare instances, the owner of the copyrights will be the
composer and/or lyricist.

Kriswrite