不知道它在哪里被记录下来，但是如果你源代码ggpubr:::.method_info，你可以看看可用的方法。

{
    if (is.null(method)) 
        method = "wilcox.test"
    allowed.methods <- list(t = "t.test", t.test = "t.test", 
        student = "t.test", wiloxon = "wilcox.test", wilcox = "wilcox.test", 
        wilcox.test = "wilcox.test", anova = "anova", aov = "anova", 
        kruskal = "kruskal.test", kruskal.test = "kruskal.test")
    method.names <- list(t.test = "T-test", wilcox.test = "Wilcoxon", 
        anova = "Anova", kruskal.test = "Kruskal-Wallis")
    if (!(method %in% names(allowed.methods))) 
        stop("Non-supported method specified. Allowed methods are one of: ", 
            .collapse(allowed.methods, sep = ", "))
    method <- allowed.methods[[method]]
    method.name <- method.names[[method]]
    list(method = method, name = method.name)
}

看起来非参数方法的选项是"wilcox.test"和"kruskal.test"。我相信威尔科克斯和曼-惠特尼是一回事。