QC Researcher here!

1/ Digital and analog - where digital equals qubits and analog equals photonics, diamonds, or a range of other bit replacements.

2/ Qubits and gates are the building blocks and operations in digital. Photons, diamonds, electrons, and so on are the bits in analog, you can encode any of these with information in various ways.

3/Strawberry fields for analog qc, and IBM's qiskit for digital

I work on photonic integrated circuits and adapt them to remove the physical limitations on capacity, such as heat, and information loss.