THE most common type of interview
The most common type of interview is actually an amalgamation of all types of interviews. One of the reasons for this is that less than half of all interviewers are actually trained in any way to conduct interviews. The result is a hodgepodge collection of the interviewer's individual experiences of interviews that they underwent as candidates themselves. Elements of all interview techniques and styles can and will be evident.
Very often they will be little discernible structure to the interview. They are sometimes merely rattling off the best questions that they experienced when they were sitting in your position. Now that doesn't mean that the interview is pointless and waste of time for everybody. Such an exchange of information will still be of value to both sides involved in the experience. Each will know more about the other and hopefully you will have done a more than adequate job of selling yourself.