For Mellanox ethernet controller ConnectX-3/ConnectX-3, VMware Knowledge Base describes to use driver "nmlx4_en 3.16.11.10 (6.5 driver) or new releases (6.7 driver)".
The nmlx4_en 3.16.11.10 release is for 6.5 only and can be found at https://my.vmware.com/group/vmware/details?downloadGroup=DT-ESXI65-MELLANOX-NMLX4-EN-3161110&productId=614
According https://www.vmware.com/resources/compatibility/search.php?deviceCategory=io&details=1&partner=55&releases=485&page=8&display_interval=10&sortColumn=Partner&sortOrder=Asc the MT27500 Family is builtin supported with ESXi 6.7U3 (with a newer release nmlx4_en version 3.17.13.1-1vmw).
As there is no standalone ESXi 6.7 driver, which release for "or new releases (6.7 driver)" is officially supported for ESXi 6.7 non-U3 releases?