This is the correct answer, if you follow the link: VMware Compatibility Guide - I/O Device Search, then change to ESXi v6.7U3.
Then expand the info "+" and follow that link to: https://my.vmware.com/group/vmware/details?downloadGroup=DT-ESXI55-LSI-MEGARAID_SAS-66045400-1OEM&productId=353,
Then open: "Read More". it identifies the LSI-9260.
I have been using the LSI2308, but plan to add a host to my "Home" VMware Cloud, using the LSI9260.
I'll update the post once I'm done.
This is a total mess since Broadcom bought LSI/AVAGO, on the support downloads page on Broadcom site for 9260-8i and 9261-8i if i click on the link to download the latest drivers it points to the mr3 driver instead of megraid-sas driver:
"The certified driver package 7.702.14.00 is downloadable from the vmware web site for
Please download from this location. A free vmware.com account is required to login and download."
This for sure is a problem in Broadcom support site, because the driver is for sure megraid-sas.
I asked for clarification opening a case in Broadcom but unfortunately they closed the case because my 9261-8i is OEM from SUN so they won't give support for it.