which iwgp heavyweight championship are listed?
keiji mutoh, hiroshi tanahashi, shinya hashimoto, tatsumi fujinami, kensuke sasaki, yuji nagata, kazuchika okada+, kazuyuki fujita, big van vader, shinsuke nakamura, riki choshu, antonio inoki, brock lesnar, hiroyoshi tenzan, yoshihiro takayama, satoshi kojima, togi makabe, scott norton, nobuhiko takada, bob sapp, salman hashimikov, tadao yasuda, manabu nakanishi, masahiro chono, genichiro tenryu
of those, who are the top five wrestlers?
keiji mutoh, hiroshi tanahashi, shinya hashimoto, tatsumi fujinami, kensuke sasaki
of those, who has exactly 5 reigns?
kensuke sasaki