This inheritance list is sorted roughly, but not completely, alphabetically:

Correry::integrators::AccelerationField	The acceleration produced by a set of masses at a set of positions
Correry::solvers::ForceSolver	A method for computing the gravitational acceleration of a set of particles
Correry::solvers::BarnesHutSolver	The Barnes-Hut solver described above
Correry::solvers::DirectSolver	The O(N^2) solver described above
Correry::solvers::SyclDirectSolver	Direct summation evaluated on a SYCL device
Correry::solvers::SyclTreeSolver	Barnes-Hut with the traversal on a SYCL device
Correry::core::AlignedAllocator< T >	A standard allocator that returns cache-line-aligned storage
Correry::sim::BinaryReader	Reads what BinaryWriter writes
Correry::sim::BinaryWriter	Writes the scalar types the formats in this layer are built from
Correry::solvers::BoundingCube	The cube that encloses a configuration
Correry::sim::Checkpoint	A run, stopped
Correry::viz::Colour	A colour in linear light, before tone mapping
Correry::sim::Configuration	A whole run, as data
Correry::backend::CpuFeatures	The instruction set extensions this project can make use of
Correry::backend::DeviceDescription	What the runtime reports about a device, in types that do not require SYCL
Correry::core::Diagnostics	Every conserved quantity of a configuration, measured at one instant
Correry::sim::DiagnosticsLog	Appends one row per measurement to a CSV file
Correry::initial_conditions::DiscGalaxyParameters	A disc galaxy to sample
Correry::solvers::EvaluationTimings	Where the time of one force evaluation went
Correry::backend::Executor	Something that can run a loop body over a range, possibly in parallel
Correry::backend::SerialExecutor	Runs the whole range on the calling thread
Correry::backend::StaticExecutor	Divides the range into equal shares once and does not revisit the decision
Correry::backend::WorkStealingExecutor	Divides the range into equal shares and lets idle workers take from busy ones
Correry::backend::ExecutorStatistics	The whole pool's record
Correry::core::FunctionRef< Signature >
Correry::core::FunctionRef< Result(Args...)>	A reference to a callable taking Args and returning Result
Correry::initial_conditions::GalaxyCollisionParameters	An encounter between two disc galaxies
Correry::viz::GlFunctions	The entry points, as the pointers the driver returns
Correry::viz::Image	A rectangle of 8-bit RGB pixels, row-major from the top left
Correry::backend::IndexRange	A half-open range of indices
Correry::sim::InitialConditionSettings	What the run starts from
Correry::integrators::Integrator	A method for advancing particle positions and velocities through time
Correry::integrators::RungeKutta4	The classical fourth-order Runge-Kutta method
Correry::integrators::VelocityVerlet	The second-order symplectic integrator described above
Correry::integrators::Yoshida4	The fourth-order symplectic composition described above
Correry::sim::IntegratorSettings
Correry::solvers::InteractionCount	What a solver has done since the count was last reset
Correry::initial_conditions::KeplerParameters	A bound two-body orbit, described by its elements
Correry::backend::LogicalProcessor	One logical processor, as the operating system numbers them
Correry::viz::Mat4	A 4-by-4 transform in column-major order
Correry::solvers::MortonKey	One particle's place on the curve
Correry::solvers::MortonOrdering	The particles of a configuration, in the order the tree wants them
Correry::solvers::Octree	The octree of one configuration, built from Morton-sorted particles
Correry::viz::OrbitCamera	A camera that orbits a point
Correry::sim::OutputSettings	What the run writes down, and how often
Correry::backend::PaddedWorkerStatistics	One worker's record, on a cache line of its own
Correry::core::ParticleData	Storage for a set of point masses in structure-of-arrays layout
Correry::initial_conditions::PlummerParameters	A Plummer sphere to sample
Correry::viz::PointRenderer	The two-pass point renderer described above
Correry::solvers::Quadrupole	The traceless second moment of a cell about its centre of mass
Correry::core::RandomSource	A seeded stream of random numbers
Correry::solvers::ReferenceAcceleration	An acceleration in double precision, whatever the build's scalar type is
Correry::viz::RenderSettings	Everything about how the picture looks that is not the camera
Correry::sim::RunOutput	Somewhere for a run to report itself to
Correry::sim::FileOutput	Writes the trajectory, the diagnostics and the checkpoints a configuration asks for
Correry::sim::RunSettings	How far to go, and from what stream of random numbers
Cstd::runtime_error
Correry::sim::ConfigurationError	A configuration file that could not be read as one
Correry::sim::Simulation	A gravitational simulation in progress
Correry::core::Softening	The softening length of the Plummer kernel above
Correry::sim::SolverSettings	Which solver, and the parameters that decide what it computes
Correry::solvers::SyclEvaluationTimings	Where the last evaluation spent its time
Correry::solvers::SyclTreeTimings	Where one force evaluation spent its time
Correry::backend::ThreadPool	Worker threads and a way to run something on all of them at once
Correry::viz::ToneMapping	The two numbers that decide how bright the picture is
Correry::sim::TrajectoryFrame	One recorded instant
Correry::sim::TrajectoryInfo	What a trajectory file's header says about it
Correry::sim::TrajectoryReader	Reads the format above
Correry::sim::TrajectoryWriter	Writes the format above
Correry::solvers::TreeNode	One cell of the tree
Correry::solvers::TreeParameters	The choices that decide what the tree costs and how accurate it is
Correry::initial_conditions::UniformSphereParameters	A sphere of uniform density to sample
Correry::backend::UsmArray< T >	An owning, movable, cache-line-aligned shared USM allocation
Correry::core::Vec3	A vector in three-dimensional Euclidean space
Correry::core::Vec3Array	A resizable array of 3-vectors in component-array layout
Correry::core::Vec3Span< T >	A view of three component arrays of equal length
Correry::viz::Vec4	A point or direction in homogeneous coordinates
Correry::viz::ViewerWindow	A window, its context, and an orbit camera the mouse drives
Correry::solvers::WalkCounts	What one walk did, in the two units InteractionCount reports
Correry::viz::WindowOptions	How the window is created
Correry::backend::WorkerStatistics	One worker's record, accumulated over every region since the last reset