Rape in itself is invariably categorised through the relationship between victim and rapist.
Both in the US and UK in 80% of rapes, the victim knew their attacker.
The remainder are 'stranger rapes'.
In the US and UK, profiling of 'stranger' rapists is quite advanced. A summary of such profiles (US-centric) can be found at Forensics Talk.
Profiling aquaintence rape has proved more difficult, but even so some core attributes have been identified in the attackers;
*A propensity toward violence in problem-solving;
*Aggressiveness in intimate relationships; and
*Being overly demanding of partners.
Further discussion on aquaintence rape profiling (once again US-centric) can be found at The National Centre for Victims Of Crime
A key feature of aquaintence rape is the prevelance of alcohol. The above web site quotes with reference to college rapes in the US;
One study found that 75 percent (75%) of the males and 50 percent (50%) of the females involved in college campus acquaintance rapes had been drinking when the sexual assault occurred (Bohmer & Parrot, 1993).
(the quotes can be used if I include this text - Copyright © 2008 by the National Center for Victims of Crime.)
Okay I'm not going to labour the point. The science of profiling stranger rapists is well advanced. The same confidence cannot be applied to aquaintance rapists. Even so though some key elements to distinquish such offenders are coming to light.