There’s a “Synth Voice” tag in the library that will reveal a lot of semi-modular synth modules that may help you get to where you want to go quicker, but bear in mind a lot of users use VCV Rack to build a synth voice out of several discrete modules so a lot of the emphasis is on building your perfect synth instead of having one pre-built.
One I would recommend as a great starting point is Surge Patch Player because that reminds me of an old school general MIDI module like a Roland MT-32, something you used to find in the cobwebbed corner of a studio that you can use to quickly fake a harpsichord or marimba if nothing else is handy.
I haven’t seen much in the way of tutorial videos where people are building synths to play (e.g. via MIDI keyboard) in VCV Rack though I haven’t been looking for them either.
It will be interesting as and when the official plugin version of VCV Rack is released to see if things change and more people start using VCV to build instruments they can ‘play’ from the DAW just like any other plugin instrument. Because it’s a bit shonky getting VCV and DAWs to play nice currently most people (at least those who post patches) seem to be using Rack standalone to play generative sequences rather than ones needing a player’s input.