As far as I know VCF supports up to vCenter configuration maximums for the consolidated design, which is 64 nodes per cluster (theoretical maximum).
I recommend to look at the standard architecture if you are deploying a larger environment (more than 7-8 hosts)
Rick is correct. The Consolidated Design can be used from 4 to 64 hosts. Besides technical aspects I recommend to also consider the financial aspects and business case. Assume you have 7 hosts (the minimum for the Standard Architecture) then 4 of those are for the Management Domain. This leaves 3 hosts for workloads. It may work out financially if you need to save OpEx and the savings justify the overhead.
I find most customers leveraging the Standard Architecture when they have 12 hosts or more. But it is your choice.
64 nodes is the maximum, and I’m assuming the minimum should be 4+ hence that illustration should be “6 nodes or more” given the VCF components include vRealize Suite. Remember this question is about the documentation.
Here's what i grabbed from the VCF 3.8 doc i found online as well: https://www.vmware.com/content/dam/learn/nl/emea/fy20/summer_school_pdfs/343572_ACJ_SDDC_the_easy_way_VMware_Cloud_Found…