The following export product groups represent the highest dollar value in Nigerian global shipments during 2019. Also shown is the percentage share each export category represents in terms of overall exports from Nigeria.

Mineral fuels including oil: US$46.7 billion (87.1% of total exports)
Ships, boats: $3.2 billion (5.9%)
Other base metal goods: $2.1 billion (3.9%)
Cocoa: $311.1 million (0.6%)
Oil seeds: $299.7 million (0.6%)
Fertilizers: $151.7 million (0.3%)
Fruits, nuts: $113.4 million (0.2%)
Tobacco, manufactured substitutes: $103.7 million (0.2%)
Raw hides, skins not furskins, leather: $75.3 million (0.1%)
Aircraft, spacecraft: $69.8 million (0.1%)

http://www.worldstopexports.com/nigerias-top-10-exports/

You might be surprised at the top 25 too.