Again ONTAP does not support RoCE (at least for now in 9.4), therefore there are no NIC adapters for FAS/AFF systems supported RoCE. ONTAP 9.4 does support NVMe over fabrics in the form of FC-NVMe, current FC maximum is 32Gbps.
E-Series storage systems are not compatible with components from FAS/AFF systems, including NIC's.
But E-Series do support RoCE protocol. Not sure about 100Gbps for RoCE.