The Landslide
From behind with the receiving partner face down and the other sitting up, leaning back on their hands. A downward angle that feels very different.
The receiving partner lies face down with legs straight and together, propped up on their forearms. The other partner straddles the backs of their thighs, facing the same way, and enters from behind. Then they lean back and put their hands on the bed behind them, with their knees bent and feet flat on the bed on either side of the receiving partner's body. Their weight goes into their hands and feet rather than onto the receiving partner. Movement is slow, a rocking of the hips rather than thrusting, because the angle bends sharply downward. The receiving partner can lift or lower their hips slightly to find the spot that feels best.
A tight, unusual angle and a lot of pressure along the back wall. Some people with a larger partner find it easier because depth stays modest.
A thin pillow under the receiving partner's hips eases the downward bend for both of you.
Let the receiving partner squeeze their thighs together. It changes the sensation a lot with no extra movement.
This angle bends a penis downward more than most. Go slowly, keep movement small, and stop at the first sign of discomfort.
Agree on it before you try it, use plenty of lube, and either of you can stop at any point. This guide is general information, not medical advice.