What must appear on the label
On this page9
The three that travel together
Brand name, the class and type designation, and alcohol content. All three in the same field of vision.
What a field of vision is
The regulation is explicit: all of the pieces of information can be viewed simultaneously without the need to turn the container. On a round bottle that is roughly the width you can see at once, which is less than people assume.
The two that may go anywhere
The name and address of the bottler, distiller or importer, and the net contents. Anywhere on the container, which includes a back label or a neck label.
And net contents may be in the glass
It "may be blown, embossed, or molded into the container". On a custom bottle that removes a line from the label permanently, and it is a decision taken when the mould is made rather than when the label is designed.
Class and type is not a marketing phrase
It is a designation drawn from the regulations, and what a product may be called follows from how it was made. Deciding the name before confirming the designation is a common and costly sequence.
Plus the disclosures that apply to your formula
The regulation separately requires statements for neutral spirits percentage, wood treatment, age, state of distillation for certain whiskeys, FD&C Yellow No. 5, cochineal extract or carmine, sulfites and aspartame. Which of those apply is a question about your formula.
And the Government Warning, separately
It sits apart from all of the above, with its own placement and legibility rules, and it is quoted rather than written.
Design the mandatory block first
The field of vision and the warning together are a fixed demand on the bottle. Lay them out at the correct sizes on the actual panel, then put the brand design in what is left.