Looking to visualizer
 

I'm operating with just one computer that is even remotely capable of running virtualization software configurations.

I'm using Oracle Virtual Box as my preferred virtualization software platform however, I do happen to have a ligament license of Broadcom/VMWare Workstation.

Virtualization host Specifications

SSD 400 GB
HDD/Spinner 1.8TB
memory 16GB Unbuffered ECC sever grade ram
Video Board: AMD/ATI Radeon 7500/8500 series professional graphics card.

it is unclear (for me) what are you looking for.

Sounds to me like they're looking for a virtualization platform, like vmware esxi, proxmox etc.
If you want to use your vmware workstation license, you could invest in ESXi (but i believe its paid-only now), i use Proxmox VE myself, which is open-source and free =D

There are so many free virtual machines available one would have to choose what they want from a VM.

Many people get a free VirtualBox program installed.

Proxmox is a neat bare metal hypervisor that is more like a commercial product. Has advanced server features.

Thanks you all for your guidenace on which Virtualization platforms. I'll look into ESXI or maybe even PrxMox.

I am using QEMU with Virtual Machine Manager here.
It gets a bit better performance than VirtualBox.