I've watched many near death videos where they talk about being on the other side and being pure spirit, without a physical body. I'm sure they are reporting what they experienced accurately, but isn't it possible that they don't have a physical body on the other side because they are going to return to their physical body on earth? Near Death experiencers are sent back to earth to finish their tasks here, so perhaps they don't fully transition. Just a theory.
I have had physical, bodily contact twice with people who have passed over. The first time, as I describe in my book, occurred when I was furious at my husband for being a cheater and was about to throw his ashes into the trash. My late husband visited me in a very loving physical way that lessened my fury at him and saved me from committing what was probably a sacrilege.
The second time was when a recently deceased, very close friend visited me in a lucid dream. She was a woman who'd gone to Mass every single morning of her life. When she appeared in the dream, she looked beautiful and radiant in a glowing white sweater and slacks, the style she always wore, but, of course, the radiant white was indescribable. She smiled at me and as she said, "I still have a body," she reached out and touched my hand instantly waking me up with a very distinct sense of my hand just having been touched.
I wrote my good friend, her husband, because I thought this was a message for him, to validate that she was visiting him and he had probably felt it, but been unsure. That was partly true. But the message turned out to be for her daughter. It seems her grandson was graduating from high school at the time. There was a spare bedroom that her mother usually slept in when she visited, but wasn't used as often now. Her daughter cleaned the room herself and was sure she'd arranged her magazines chronologically, but every time she did it, she'd come back and find the old magazine with the article on motherhood on top of the pile. She was sure that it was a message from her mom to let her know she was going to be around for her grandson's graduation. Her mom had visited me to make sure her daughter would believe she had a body with hands that could move magazines, no matter how often her neatnik daughter rearranged them. She knew her daughter would not fail to notice this sign from her mom.
Actually, now that I think of it, both mother and daughter were and are VERY NEAT people. You could move whole piles of magazines at my house and no one, certainly not myself, would ever notice.
So I'd have to say that at least some people, some of the time certainly in my experience have physical bodies of some kind on the other side that can interact with our physical world.