Currently at the moment, I'm doing my research on the glyph origin of 規/规 (guī; rules, regulations, customs, law) and I can't really come to a determination of what this character's origin is.
I've already checked the Old Chinese pronunciations for this character and it's components, but it seems like this character isn't a phonosemantic compound one but rather it looks to be a character probably composed of two related components that contributes to this character.
As for the evolution on its glyph origin according to 小學堂, I've noticed the strange bronze inscription form (the first one) that's supposedly looks kind of unrelated to 規. I'm not sure how they analyzed it with that exact shape but now I'm wondering more about the origin. For reference:
Also so far from the sources I've browsed through about this character, here's what some suggest about the origin of 規:
zi.tools, 李学勤 《字源》p.920: Suggests it's a compound ideograph composed of 夫 and 見 (or as both of these sources describe it, the law is what man (夫) see (見)).
Outlier Linguistics Dictionary of Chinese Characters: Composed of an arrow (originally 矢, now written as 夫) with the 見 component being later added to indicate someone watching the arrow, originally meaning "compass (for drawing arcs)".
漢語多功能字庫: Composed of 夫 and 見 and originally meant "law" and "standard". This source also mentions that it was said to be a tool for drawing a circle, which could likely explain why 小學堂 chose that bronze inscription glyph for 規.
Wenlin Dictionaries: Composed of a character shaped like a drawing tool (or 夫) and 見 (to see) which both suggests the action of one using a compass to draw a shape.
From what I can gather, the most common explanation is that 規 originated from a pictograph of a drawing tool, or compass, with 見 (to see) being later added to the character to indicate someone watching the drawing tool.
I'm not quite sure about this explanation so if anyone could verify if this is the correct glyph origin or at least try to explain it, I would greatly appreciate the assistance here!! :)