Philosophers are not commonly referred to by any of the options provided (Slavs, Magyars, Muslim Arabs, Normans) as a collective group. However, if you're looking for a historical context, Muslim Arabs could be relevant, especially during the Islamic Golden Age, when many philosophers, including figures like Al-Farabi, Avicenna, and Averroes, contributed significantly to philosophy. They are sometimes referred to broadly as "Islamic philosophers" or "Arabic philosophers" due to their cultural and linguistic background.
If the question intends to identify a cultural or historical group associated with philosophy, "Muslim Arabs" would be the closest option.