Hi,
Using Arturia applications.
Example 1: If you mean the Piano, then i would try Piano V2.
Example 2: For the Organ i would try B3 V2 first.
Example 3: For the Electric Piano i would try Stage-73 V2.
For the Strings perhaps Juno-6 V, but also other applications like ie Solina V2. Even organs like Farfisa V and VOX Continental.
For the basses i don't know what to suggest. Perhaps start with DX7 V, Juno-6 V (106, 60) and CZ V as i think those where synths used for house music. Not only for Bass.
Both DX7 V and CZ V can import sysex sounds. I believe many House bass sounds was edited DX7 presets. Juno-6 is a easy to use synth.
Other synths can also be used. I assume many synth has been used in house music over the years.
Effects, EQ and other processing can be a part of the sound. So can the chords/ notes.
I exspect you will and shall create your own sounds.
Recreating sounds 100% can be hard.
FYI: Very often a lead can be a good bass and the other way around.