Assembling a panel for a two-room apartment

1. For a warm floor, a difavtomat (or RCD + automatic machine) is needed, since this consumer is dangerous from the point of view of electric shock. For light, one machine will be enough, but you can leave the difavtomat as well - this will not be a mistake.
2. As for a separate machine for a washing machine - in this case, it all depends on what kind of load will be connected to the sockets in the bathroom. If, in addition to the washing machine, another powerful electrical appliance is turned on in the bathroom, for example, a storage water heater, then you need to install a separate machine.
3. RCD type A protects against AC leakage and impulse current leakage. RCD type AC protects only against AC sinusoidal current leakage. That is, it all depends on what electrical appliances this RCD protects. For electrical appliances that structurally have power supplies, converters, various regulators, type A RCDs are needed.
The RCD must be selected for a rated current that is one step higher than the rated current of the machines, if several machines are for a step higher than the total rated current machines, since the machines do not turn off immediately when overloaded, and if you select an RCD with the same rating as the machine, then it can be overloaded in the process exploitation.

As for the circuit as a whole, if you already have a 63 A RCD at the input with a meter, then there is no need to install another RCD for several consumer groups at the same rating. It would be more correct to put separate RCDs on those lines that power the most dangerous electrical appliances from the point of view of electric shock. That is, if such electrical appliances do not turn on on one line or another, then an RCD on this line does not need to be installed. The RCD at the input performs a fire-fighting function, protecting the wiring as a whole.
If you really have an RCD at the input, then you need to put an automatic machine at the input. You write a switch on the diagram, but you need an automatic machine. Choose the machine based on the cross-section of the input cable, the value of the meter. In this case, the RCD must also be at a value higher than the input machine.