Which of the following household employees is required to fill out a Form W-4 for the tax year?

Megan, who was hired on August 2, 2017 as a live-in nanny and has additional tax withheld due to large amounts of investment income.

Jackson, who was hired as a personal assistant on March 14, 2019.

Argelio, who was hired as a private nurse on September 23, 2021.

Angelo, who was hired as a full-time gardener on July 28, 2018 and adjusted his withholding in 2019 because he bought a house and had a baby.