how would you build it

what hardware and components would you choose for your build if you
intended to use it to host only multiple virtual machines?

These days, I worry about computer security and the creepy push of
businesses extending AI into even simple tasks such as notepad.  Most
of my existing gear works very well for what I do, but I'm thinking
that it may be time to upgrade it.  If I do so, one direction would be
to build a pc that would use some type of basic OS and host mullitple
VMs on it tailored to the software I want to use.  My uses would be
basic productivity software such as a spreadsheet, a basic text
processor like Notepad, an email client, a web browser and RPG games
like Baldur's Gate and its ilk.

The host OS will likely be some variant of Linux.  I will use
VirtualBox for the virtual machines.  The guest VMs would be Microsoft,
Linux and maybe Android.

In my questions below, I ask about the minimum because I want to know
what I should consider as a starting point.

1.  Given that scenario, what should be the minimum CPU speed?  My
preferred brand is AMD.
2.  What should be the minimum amount of RAM?  I'm not expecting to run
multiple VMs at the same time.
3.  To what extent is the choice of graphics (an integrated CPU or
standalone, discrete graphics card) affected since any specialty
graphics software will be installed in the VM, not on the host machine
itself?
4.  What would be the strategy for the type, size and number of storage
devices?  Off the top of my head, I expect to use hard drives for
storing my data, but there are other types of devices such as USB, SSD,
NVME (sp?), CD, DVD etc.