I noticed that there is a variant of the 之繞 radical which occurs in some words but not others. The variant is (with an extra stroke). It appears in words like 逢う and .
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It turns out that Non-Joyo kanji which use the 之繞 radical are written with the variant while Joyo kanji use the more common - "常用漢字以外は「辶」を用いる" (See details here).

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

  • The description is not quite accurate. The one-dot variant is neither "standard" nor "Joyo", it's every kanji in Joyo standardised before the 2010 reform. The two-dot variant is more "standard" as it applies to all other Kanji, including Joyo kanji after 2010. See japanese.stackexchange.com/questions/65350/…. Also, neither of these variants apply to handwriting. – dROOOze Jun 11 '19 at 12:06
  • I will comment on the other thread instead. This thread is now redundant. – kandyman Jun 11 '19 at 12:17

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