Naruto: Who may be the third ninja whom Orochimaru tried to summon during battle with Third Hokage?

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Orochimaru attempted to summon during his epic battle with the Third Hokage during the Chunin Exams. This enigma has sparked countless debates and theories among fans.
Theories and Speculations:

• The Minato Namikaze Theory: One prevalent theory suggests that the third coffin was intended to summon Minato Namikaze, the Fourth Hokage. This theory is supported by the clear labeling on the coffin, which reads «Fourth.» Minato holds a significant place in the series, and the expectation that he might be the one inside the coffin is high. However, there are complexities in this theory, given the unique circumstances surrounding Minato's soul and the Reaper Death Seal.
• The Empty Coffin Theory: Some fans have speculated that the third coffin might have been empty, and Orochimaru labeled it as «Fourth» to taunt the Third Hokage, Hiruzen Sarutobi. This theory is based on the notion that Minato's soul could not be summoned conventionally due to his self-sacrifice to protect the village and Naruto from the Nine-Tails attack. The deliberate labeling could be seen as a plot device to engage fans in debate.
• Alternative Ninja Theories: Beyond the Minato theory, fans have put forth alternative ideas regarding the identity of the ninja in the third coffin. Some suggest that it could have been a powerful figure like Madara Uchiha, known for his formidable presence in the series. Others speculate that Mito Uzumaki, Hashirama Senju's wife and the first jinchuriki of the Nine-Tails, may have been hidden inside the coffin. While these theories are intriguing, they lack concrete evidence to support them.

Masashi Kishimoto's Silence: The creator of the «Naruto» se,ries, Masashi Kishimoto, has chosen to keep the identity of the occupant in