Ap 360Cam is a Blender add-on from Alex Pearce built around adding panoramic cameras to a scene and rendering all of them. Its Add 360 Camera button drops a panoramic camera into the scene, and Render all Cameras renders every camera that has been set up. According to the developer, you can set up ten cameras and press render in under a minute.
The add-on groups several tools together. Resolution buttons set the scene to 1k, 2k, 4k or 8k equirectangular sizes, from 1024x512 up to 8192x4096. Quality presets switch the sample count between Preview, Low, Medium and High. Stereoscopy controls toggle between mono and stereo, with a Denoise option that sets up a denoise pass in the compositor. Navigation tools move cameras to the 3D cursor at a set height, step through cameras with arrow buttons, and adjust location and rotation using x, y, z vectors. A Render Region option limits the viewport to the equirectangular image.
The add-on supports Blender 2.8 through 2.9 and is released under the GPL license. Documentation and a demo video are available on the developer's page.