Below are some references of studies on this topic:
Schreck, K. A., & Williams, K. (2006). Food preferences and factors influencing food selectivity for children with autism spectrum disorders. Research in developmental disabilities, 27(4), 353-363.
Crowley, J. G., Peterson, K. M., Fisher, W. W., & Piazza, C. C. (2020). Treating food selectivity as resistance to change in children with autism spectrum disorder. Journal of applied behavior analysis, 53(4), 2002-2023.
Kronfli, F. R., Vollmer, T. R., Fernand, J. K., & Bolívar, H. A. (2020). Evaluating preference for and reinforcing efficacy of fruits and vegetables compared with salty and sweet foods. Journal of Applied Behavior Analysis, 53(1), 385-401.
Schreck, K. A., Williams, K., & Smith, A. F. (2004). A comparison of eating behaviors between children with and without autism. Journal of autism and developmental disorders, 34, 433-438.