what adapter for Cintiq 22HD (DVI) to 2018 iMac (USB-C, HDMI ports)?

I had a mid 2011 iMac, used a DVI to mini display port adapter? not sure, the adapter plugged into a slot on the iMac with a little lightening bolt over it. Is that display port compatible? Will the USB-C to Thunderbolt 2 adapter work if I chain it to my old adapter? other input here says no. What can connect my Cintiq to this iMac?

USB-C Digital AV Multiport Adapter

USB-C Digital AV Multiport Adapter

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