...
Use
matInputfor all instances of<input type="text">
‘Input Hint' Usage Rules
Use 'input hints' for individual/single input feedback. For whole page related feedback, see Snackbar usage rules.
...
Use
<mat-hint>container if the input is required and needs a ‘required message' e.g. This field is required or if the field has HTML5 input validation, e.g. email format check
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Advertisers > Advertiser > Value Transforms Table
Advertisers > Advertiser > Validations Lists Table
Campaign > Processr Table
Leads > Lead Profile Modal > Profile Tab Table [Development In Progress]
Input Prefix
N/A (Campaign > Publisher > Assign > Payout Column)