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Champion RA8HC has the same thread, seat, reach, hex size, and terminal type. I ordered a Kohler plug from Amazon and they actually shipped me this Champion Plug.
Most all brand spark plug brands are on the cross reference including Champion. Some of the brands that cross reference to Champion are Autolite and Denso,
Champion J19LM
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Champion RN4C
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There is no Champion spark plug with the part number 696798. There is a Briggs and Stratton part number 696798 that does cross reference with a Champion RJ 19LM.
Champion RJ19LM
Champion rj19lm
Champion Spark Plug QC12YC