Using 'mark down as' can imply a quick, sometimes subjective judgment of someone or something.

Judgmental Nuance

This phrase often relates to forming an opinion based on a first impression.

First Impressions

Your 'mark down as' categorization can change if new information arises.

Use 'mark down as' to indicate or track progress or completion of tasks.

In meetings, 'mark down as' is useful for noting key points or decisions.

Using 'mark down as' can emphasize the importance of particular information.