All types of bhava start with a hadaya vatthu and a set of pasada rupa.
– That set can be called “manomaya kaya.” So, any living being has a manomaya kaya.
Brahmas and Devas are born with that manomaya kaya AND a “physical body.” They live their whole lives in that state. Those “physical bodies” of Brahmas and Devas are, of course, at a much less density compared to “human bodies.”
Humans and animals are born only with the manomaya kaya at the patisandhi moment. They start making “physical bodies” after getting into a womb.
– However, such manomaya kaya can become a bit dense due to inhaling the aroma of plants, flowers, etc. Thus the name gandhabba (gandha + abba).
The other 3 realms in the apayas can be complex. For example, a hell-being is said to born with a full physical body. They get “killed” often due to torture, but are reborn instantaneously until that kammic energy is exhausted.
You wrote: ” I wanted to write another post on the topic of Ven. Ledi Sayadaw, but it seems that the topic is closed.”
– Which three is that? If you post the link I can re-open it.