As you suggested I tried this but still with no luck on this machine ..
and even with no hashrate somehow it was just satisfying to install cgminer with homebrew !
cgminer version 4.11.1 - Started: [2019-10-09 11:38:08.878]
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(5s):0.000 (1m):0.000 (5m):0.000 (15m):0.000 (avg):0.000h/s
A:0 R:0 HW:0 WU:0.0/m
Connected to de.ckpool.org diff 10K with stratum as user
Block: 14438d41... Diff:12.8T Started: [11:38:08.673] Best share: 0
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[U]SB management [P]ool management [S]ettings [D]isplay options [Q]uit
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[2019-10-09 11:38:07.636] Started cgminer 4.11.1
[2019-10-09 11:38:07.636] Probing for an alive pool
[2019-10-09 11:38:08.193] Pool 0 difficulty changed to 10000
[2019-10-09 11:38:08.416] Pool 0 message: Authorised, welcome to solo.ckpool.org!
[2019-10-09 11:38:08.672] Pool 0 difficulty changed to 128
[2019-10-09 11:38:08.673] Network diff set to 12.8T
[2019-10-09 11:38:08.877] No devices detected!
[2019-10-09 11:38:08.878] Waiting for USB hotplug devices or press q to quit
When you mentioned swapping from USB2 and USB3 i figured; imo if you have the technical expertise to setup a Hackintosh, I would recommend you dual boot into Ubuntu on a separate drive. it will be far less PITA to troubleshoot on your exact, same hardware. Even the Identifier (e.g. imac13,1 imac13,2 imac14,2) you picked in Clover can make a huge difference as to how ports are addressed, and is typically hardware-specific to your motherboard and chipsets. I can help out with mining on MacOS, but troubleshooting hackintoshes is out of my wheelhouse.
I ended up buying a ssd where I will be installing Ubuntu as you recommended, hopefully I can manage.
I am looking at the latest version for desktop 19.04, is this one ok or should I go with the previous version 18.04 ?
Thank you for all the help !