There’s some lists on the wanikani stats page (which is pretty cool if you haven’t seen it)
(might not come up without a login - this might be the place to look for more info on the site [STATS] Statistics site)
(I’m actually not sure where the most up to date info on the stats site is, but In any case, here’s the list pasted from there)
(Joyo) Kanji Not On Wanikani
Grade 6
1/181 蚕
Grade 9
154/1130 曖 畏 萎 彙 壱 咽 淫 韻 畝 謁 怨 艶 旺 翁 臆 虞 苛 箇 瓦 楷 潰 諧 蓋 骸 柿 嚇 顎 葛 褐 釜 棺 玩 毀 畿 臼 嗅 僅 惧 窟 薫 詣 憬 稽 桁 繭 舷 股 錮 勾 侯 梗 乞 痕 墾 挫 采 塞 柵 刹 肢 恣 嗣 摯 賜 餌 璽 嫉 爵 腫 儒 羞 愁 遵 抄 宵 硝 詔 拭 薪 腎 裾 醒 斥 戚 煎 腺 詮 箋 膳 繕 塑 遡 曽 踪 唾 堆 但 綻 緻 逐 嫡 衷 嘲 勅 捗 朕 逓 溺 填 妬 痘 謄 頓 貪 弐 捻 罵 剥 氾 汎 斑 頒 肘 附 訃 賦 丙 蔽 餅 璧 倣 貌 頬 勃 昧 冥 麺 耗 冶 喩 瘍 窯 沃 拉 辣 濫 吏 慄 侶 厘 弄 楼 籠 麓