Final answer:
None of the options listed directly emphasize the relativity of all knowledge, instead, Greek philosopher Protagoras with his statement 'Man is the measure of all things' represents the concept that knowledge is relative to each person's experience.
Step-by-step explanation:
None of the options provided (Kammikab, Shaulkika, Rajabhatta, Sgramabhojaka) directly emphasize the relativity of all knowledge. However, since Samkhya is a school of Hindu philosophy that presents a dualistic view of consciousness and matter, and does not focus on the relativity of knowledge, none of these align with emphasizing knowledge relativity.
When looking for a philosophical perspective that emphasizes relativity, we could consider Protagoras, a Sophist philosopher, who claimed that 'Man is the measure of all things,' suggesting that knowledge is relative to each person's perspective. This view aligns with cultural relativism, a concept explored in Classical Chinese Philosophy and developed by various intellectuals over time, seeking a third alternative between moral absolutism and cultural relativism as highlighted by Socrates' rejection of the Sophists' relativism and mythopoetic thought.
Therefore, to address this kind of question, we should review the context provided and understand that none of the listed options correspond to philosophies or educators that emphasize the relativity of knowledge. We would need to explore Greek philosophy or consider the broader debate between moral absolutism and cultural relativism, which has occupied philosophical discourse over the centuries.