There could be. Since Naruto and Whitebeard are from two very popular anime/manga series, some creative fans may have written a fanfiction about Naruto being a Whitebeard fan. However, finding it might take some time. You should start by using specific search terms on fan - made story platforms. Maybe check the tags related to both Naruto and Whitebeard on these sites.
Yes, there might be. The Naruto and One Piece fandoms are both large, and it's not uncommon for fans to create crossovers or fanfictions where characters from one series admire those from another. You can try searching on popular fanfiction websites like FanFiction.net or Archive of Our Own.
Chapter 889, "Nice to meet you for the first time, please take care of me!", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event.
If you want the clearest chapter reference, go to Chapter 22. Early on, Hearing this, Su Yinwan looked at Shang Shaojing with a face full of...; later, the chapter leans on Shang, but it's not necessary; I haven't been wronged." After she spoke,....
Chapter 678, "The Biggest Connection in the Circle of Friends!", is the clearest early answer because it turns Mr's situation into a concrete plot event.
Chapter 754, "Evil Can Never Defeat Justice", is the clearest early answer because it turns Jiang Yan's situation into a concrete plot event. It opens with After the court trial ended, everyone immediately threw a party for...
Look to Chapter 13 for the clearest answer. It begins with Sensing that something was off with Jiang Yan, Jiang Yan dismissed the..., keeps building through What on earth do you mean?" Ignoring him once again, Jiang Li shifted her..., and lands on How could this happen..." Lin Manru didn't want to.
Chapter 856, "Hurry and Stop Work!", is the clearest early answer because it turns Exactly's situation into a concrete plot event. It opens with Jiang Li looked towards the source of the commotion. and closes on If you can't afford the cab fare, I can help pay it..
Chapter 839, "Because There's a Good Show to Perform", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event. It opens with But don't worry." Gu Qiang said, holding Shi Lei's hand, "The... and closes on But Rong Kexi wasn't the same..
Chapter 732, "Sister Xiao Wan, I Don't Understand", is the clearest early answer because it turns Chengcheng's situation into a concrete plot event.
Chapter 940, "When Did the River Moon First Illuminate People? [Extra · River Moon Chapter]", is the clearest early answer because it turns Lin Manru's situation into a concrete plot event. It opens with Nanny Qiao, is the peach resin ready?