I'd hate to burst your bubble but Forest and Derby fan bases are not bigger then Leicester.
From European football statistics from the year 1889 to 2023, Leicester rank 17th overall in English football with an average attendance of 19,764, Derby are next ranked 20th with 18,598, Forest are ranked at 22nd with 18,548 and Coventry rank at 25th with an average attendance of 17,196.
Let's not get into our social media following or popularity dwarfs all 3 of your clubs combined on all platforms, we're ranked 7th overall in England.
Leicester shirt sales are also top 10 in England.
A quick Google search will confirm all this thank you. FACTS.