Architectures of hierarchical two-planetary systems with hot or warm gas giants and massive outer companions on wide orbits. The circles in the left panel symbolise the host stars, whose effective temperatures are coded with the colour scale placed at the top of the diagram. Their relative sizes reflect the stars’ actual radii. The inner planets and their outer companions are marked in the right panel with mustard and blue-steel circles, respectively. Their sizes are scaled with third-degree roots of the planets’ masses or minimal masses. The orbital separations in peri- and apoapsis are shown with horizontal line segments. Note that stars’ and planets’ sizes are not to the scale. The catalogue data were downloaded from the portal exoplanet.eu of The Extrasolar Planets Encyclopaedia (accessed on 2024 February 2). The HD 118203 system is added separately and marked with a black border. The systems are sorted by the ascending semi-major axis of the inner planets.