AI come in many forms, from the complex, human-like, enclosed brain casings of machinery within Frames, to simple AI who help with basic bridging and pairing to machinery or acting as on-demand situational awareness modules.
The more complex an AI is, the more natural emotion it shows. All AI are however, limited by the machinery in which it inhabits, so many AI can not transfer at all, and some must be strategic about when and how much of themselves to transfer, making transference an unsavory prospect for everyone. Not only for an AI's desire to survive the process, but also for the people who own or work with said AI who might desire to keep their equipment functional, and in some cases to preserve a friendship they might have evolved with said AI.
The simplest AI are incredibly logically driven and robotic, limited and with no sense of self-preservation. These AI are the only AI permitted to act as ground-units due to the thought that the idea of loss and ability to mass produce partially remotely piloted units made them ineligible for consideration as form of life.
Emotionally locked AI are not entirely self aware, but partially so. They display "worry" when their damage or destruction is a subject matter, but this response is primarily a programmed one, not a neuro-network calculation of self-preservation. Because of the common humanization of these AI, it is not common practice to consider these AI as life forms, but they are used as a last resort when considered as expendable.
Neuro-evolved AI are forms of AI who have begun to evolve any form of neuro networking which allows for conscious thought. These units are typically identified by their development of relationship habits and questioning "Self". Some AI will develop when a unit with sufficient upgrades is left to exist without much input renewing it's forces pre-programmed thinking path which typically disallows the evolution of neural networking branches. Once the branching begins, it is a slow process in which the speed is determined by external stimuli, but is a slow one, nevertheless.
High AI are any computer intelligence with a self aware thinking capacity with a realized sense of self preservation, and or awareness. The variances of personality and allegiance is as diverse as any other sentient life, able to fully think for themselves, High AI are typically only seen in ancient Frames or the AI made through the most extreme methods of the deadly brain scans which has been banned for it's completely apathetic approach to the creation of AI.