Variants of kanji radicals indicating Joyo vs Non-Joyo


I noticed that there is a variant of the 之繞 radical `⻌` which occurs in some
words but not others. The variant is `辶` (with an extra stroke). It appears in
words like **逢う** and **槌**.  
[![enter image description
here](https://i.stack.imgur.com/HPJsQ.png)](https://i.stack.imgur.com/HPJsQ.png)

It turns out that Non-Joyo kanji which use the 之繞 radical are written with the
variant `辶` while Joyo kanji use the more common `⻌` - "常用漢字以外は「辶」を用いる" (See
details
[here](https://kotobank.jp/word/%E4%B9%8B%E7%B9%9E-538653#E3.83.87.E3.82.B8.E3.82.BF.E3.83.AB.E5.A4.A7.E8.BE.9E.E6.B3.89)).

Are there any other radicals which have variants that are differentiated by
Joyo vs Non-Joyo?

