[Seeking Advice] Addressing an Employment Gap

I recently accepted a job offer and am currently undergoing a background check. When I submitted my resume, I didn’t include Company 4 (as per my employment history). Now, I’ve been asked to complete a background check form that automatically calculates employment gaps. In this form, I’ve included all my work history, different from what was on my original resume.

Is this okay? Why did I omit Company 4 initially, considering I’ve had multiple interviews where this was a concern? My reasoning for skipping it was to avoid the appearance of job-hopping—something that seemed to be an issue during previous interviews, though I was able to explain it.

Here’s a snapshot of my work history for context:
– Company 1: June 2005 to June 2016
– Company 2: June 2016 to January 2018
– Business venture: January 2018 to July 2018
– Company 3: July 2018 to June 2022
– NGO work: June 2022 to present
Company 4 (which I initially skipped): September 2022 to January 2023
– Health-related gap: January 2023 to February 2023
– Company 5: March 2023 to September 2023
– Freelance work: September 2023 to present

I appreciate any insight or advice on how to navigate this situation!