I thought someone might find this useful. This is from my Pentium Gold G5420 model, w/o the iLO Enablement Kit installed.
IOMMU Group 0 00:00.0 Host bridge [0600]: Intel Corporation Device [8086:3e0f] (rev 07)
IOMMU Group 10 00:1d.3 PCI bridge [0604]: Intel Corporation Cannon Lake PCH PCI Express Root Port #12 [8086:a333] (rev f0)
IOMMU Group 11 00:1f.0 ISA bridge [0601]: Intel Corporation Device [8086:a30a] (rev 10)
IOMMU Group 11 00:1f.5 Serial bus controller [0c80]: Intel Corporation Cannon Lake PCH SPI Controller [8086:a324] (rev 10)
IOMMU Group 12 02:00.0 Ethernet controller [0200]: Intel Corporation I350 Gigabit Network Connection [8086:1521] (rev 01)
IOMMU Group 13 02:00.1 Ethernet controller [0200]: Intel Corporation I350 Gigabit Network Connection [8086:1521] (rev 01)
IOMMU Group 14 02:00.2 Ethernet controller [0200]: Intel Corporation I350 Gigabit Network Connection [8086:1521] (rev 01)
IOMMU Group 15 02:00.3 Ethernet controller [0200]: Intel Corporation I350 Gigabit Network Connection [8086:1521] (rev 01)
IOMMU Group 16 01:00.0 System peripheral [0880]: Hewlett-Packard Company Integrated Lights-Out Standard Slave Instrumentation & System Support [103c:3306] (rev 07)
IOMMU Group 16 01:00.1 VGA compatible controller [0300]: Matrox Electronics Systems Ltd. MGA G200eH3 [102b:0538] (rev 02)
IOMMU Group 16 01:00.2 System peripheral [0880]: Hewlett-Packard Company Integrated Lights-Out Standard Management Processor Support and Messaging [103c:3307] (rev 07)
IOMMU Group 16 01:00.4 USB controller [0c03]: Hewlett-Packard Company iLO5 Virtual USB Controller [103c:22f6]
IOMMU Group 1 00:01.0 PCI bridge [0604]: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor PCIe Controller (x16) [8086:1901] (rev 07)
IOMMU Group 2 00:12.0 Signal processing controller [1180]: Intel Corporation Cannon Lake PCH Thermal Controller [8086:a379] (rev 10)
IOMMU Group 3 00:14.0 USB controller [0c03]: Intel Corporation Cannon Lake PCH USB 3.1 xHCI Host Controller [8086:a36d] (rev 10)
IOMMU Group 3 00:14.2 RAM memory [0500]: Intel Corporation Cannon Lake PCH Shared SRAM [8086:a36f] (rev 10)
IOMMU Group 4 00:16.0 Communication controller [0780]: Intel Corporation Cannon Lake PCH HECI Controller [8086:a360] (rev 10)
IOMMU Group 4 00:16.4 Communication controller [0780]: Intel Corporation Cannon Lake PCH HECI Controller #2 [8086:a364] (rev 10)
IOMMU Group 5 00:1b.0 PCI bridge [0604]: Intel Corporation Cannon Lake PCH PCI Express Root Port #21 [8086:a32c] (rev f0)
IOMMU Group 6 00:1c.0 PCI bridge [0604]: Intel Corporation Cannon Lake PCH PCI Express Root Port #1 [8086:a338] (rev f0)
IOMMU Group 7 00:1d.0 PCI bridge [0604]: Intel Corporation Cannon Lake PCH PCI Express Root Port #9 [8086:a330] (rev f0)
IOMMU Group 8 00:1d.1 PCI bridge [0604]: Intel Corporation Cannon Lake PCH PCI Express Root Port #10 [8086:a331] (rev f0)
IOMMU Group 9 00:1d.2 PCI bridge [0604]: Intel Corporation Cannon Lake PCH PCI Express Root Port #11 [8086:a332] (rev f0)