Criminology responses on Violent Crime Typology

Respond to the following classmates and when commenting, focus on typologies you might add or ways you can enhance your classmates typology.

Classmate #1: 

Serial murder is a series of murders over a period of time. Although these cases tend to attract attention, they are rare and only make up a small proportion of violent crimes. In 2016, only 60% of the murder cases got cleared meaning the police arrested or incarcerated the person responsible for the crime. There are some common characteristics found in serial murderers: 90% of serial murderers are male. They tend to do poorly in school but have a bright to the normal range of IQ. There is usually a poor family connection or an unpleasant childhood linked to most serial killers. They suffer high rates of suicide attempts and over 60% of them wet their beds.
Typology 1 is Organized Serial Killers who thoroughly plan their murder from the victim the transportation to the location. These serial killers tend to be socially competent and appear normal in appearance.
Typology 2 is the Disorganize Serial Killers who tend to be both socially and sexually incompetent. They have fetishes and often return to the area where the murder was committed in order to satisfy their sexual desires through masturbation
Typology 3 is Spree Serial Killers who murder at two or more locations within a short time period. Because there are multiple murders committed within a short time frame, some planning is required in order to execute such murders.

Classmate #2:
The violent crime of murder, more specifically serial murder, is the killing of numerous victims occurring more than three separate times over a certain period of time. Serial murderers usually have a premeditated purpose to their killings and a targeted group of victims. Serial murders occur steadily over a period of time and are consistent within the victim that is targeted, how they are killed, and how the crime is conducted. There are four types of serial murderers: visionaries, mission oriented, hedonists, and power/control. Serial killers are usually influenced to victimize individuals that remind them of someone in their past that hurt them, as many serial killers share familiar characteristics. Serial murderers can be profiled into two groups-organized serial killers and disorganized serial killers. Below are three crime typologies for serial murder:
1) Typology 1 is power/control serial killers who revel in having dominance over powerless victims and indulge in their suffering. This type of serial killers commit serial murders because they gain pleasure in holding power over their victims and their desperation, due to the pain they are putting their victims through.
2) Typology 2 are visionaries who are serial killers that commit serial murder because of voices they hear in their head or visions they see, both of which are a result of severe mental illness. These serial killers genuinely believe that the voices and visions they are being subjected to are really occurring and act on them. Unfortunately, this is a symptom of a serious neurological disorder in which the serial killer is mentally unstable.
3) Typology 3 are organized serial killers who establish a detailed plan, keep items of the victim as a trophy, appear as ordinary, and are socially competent. These types of serial killers are not presumed by society to be unusual or suspicious because of their conventional appearance and ability to interact socially.