Alexa cannot find lamps after completely resetting Home Assistant

[dapper merlin]

I completely reset my Home Assistant and also removed all lamps/devices from the Alexa app. This is because I am using new light bulbs. Now, only my bedside lamp, my bedroom lamp, and my living room lamp appear in the Alexa app. My other lamps (hallway, kitchen, Nanoleaf) are not recognized.

[mild isle]

You need to expose them to Alexa in entity settings - voice assistants. They're not exposed by default.