Which recent exoplanet discoveries reshape atmospheres and system architectures?

[Kenneth.G]

As an amateur astronomer, I've been fascinated by the flood of exoplanet discoveries from missions like TESS and the James Webb Space Telescope, but I'm having trouble keeping up with the most significant findings beyond the headlines about "potentially habitable" worlds. For fellow enthusiasts or professionals who follow this field closely, which recent discoveries from the past year or two do you consider truly groundbreaking in terms of atmospheric characterization, planetary formation models, or unusual system architectures? I'm particularly interested in learning about specific exoplanets that have challenged our previous assumptions, and what upcoming missions or telescope time allocations you're most excited about for the next phase of exploration beyond simple detection.