If you're under the taxable income thresholds and have a business that has regular and continuous activity, you have a qualified business and can take the 20% deduction.
The exclusion for specified businesses is the same under those thresholds, but for specified businesses the 20% deduction can phase completely out above those thresholds.
Thankfully, IRS in the regulations interpret the restriction for where the principal asset is the reputation or skill of one or more owners or employees was limited to businesses that receive fees, compensation, or other income for endorsing products or services, or businesses in which a person licenses or receives fees, compensation, or other income for the use of an individual's image, likeness, name, signature, voice, trademark, or any other symbols associated with the individual's identity, or businesses receiving fees, compensation, or other income for appearing at an event or on radio, television, or another media format.