I removed the Extra part where Alexia is a type of visual agnosia, and also removed the Extra part where Agraphia is a type of apraxia.
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Alexia is not a type of visual Agnosia, but they are related. Alexia is not typically classified as a subtype of visual agnosia, even though both involve visual processing. In visual agnosia, you can see, but can’t recognize or assign meaning to visual objects (e.g., you see a fork but don’t know what it is). In alexia, the problem is more language-based: You can see and identify letters visually, but cannot process them as language. It's often due to damage to the visual word form area (VWFA) in the left occipitotemporal cortex. You can still recognize objects visually—so it’s not a general recognition issue.

Agraphia = Loss of ability to write, due to language disruption, motor issues, or both. Apraxia = Inability to plan or perform a motor task, even though you have the desire and physical ability. There is a subtype called "apraxic agraphia", where: The writing problem is due to impaired motor planning, not language. These patients know what they want to write and can spell verbally, but their motor execution of writing is disorganized. So: Some cases of agraphia can be caused by apraxia, but agraphia isn’t always apraxia. Agraphia may also arise from aphasia (language-based) or alexia (visual feedback impairment).

As per discussion. Thank you for the suggestion, though, and I look forward to your others. Great rationale/s. :-)