MLAG is not a requirement. You need redundant networking gear and when you create the ISL just be sure that it have enough bandwidth and redundancy. So a LAG with 2x10 or 2x25 would be fine between your 2 switches.

When speaking of MLAG i must think about HPE(Aruba) where other Vendors have things like VLTi and so on.

Regards,
Joerg