PCB layout ideas for multiple voltage power lines
Good layout requries proper planning of the power distribution first.

To achieve this, you should plan the layout such that components that form a logical group are placed near each other; from this, separation of functions becomes much easier to achieve.

If you are in a mixed signal environment with sensitive analogue signals, then there is an excellent article on planning the planes.

If you are using glue logic that is fairly recent, it will have fast rise and fall times which will definitely couple energy to nearby planes and tracks.

If you are using ADCs for data acquisition, then there is another excellent article on the subject.

On that note, ADC manufacturers have helpfully grouped all the analogue signals together so that effective noise isolation may be achieved. See the device below for an example:



I also went into some detail on this subject at this previous answer.

Good layout does not have a one size fits all, but there are accepted best practices.