It would be nice if adult books (even those with relatively low reading levels) returned Reading Level readalikes of other adult books (rather than j titles). James Patterson's "The House of Kennedy" is an adult title, Vega indicates that the publisher's recommended age and grade range is 18+ years, yet the reading level suggestions include Dog Man/Pilkey and the Good Egg/Jory John

[copied from: https://ideas.iii.com/forums/951766/suggestions/49199351]