All versions of Illustrator still crashing on startup.

This is what I'm experiencing...

At some point a few hours or 1-2 days after rebooting, (usually right when I'm in a crunch to get several assignments out) I end up going through the following cycle:

1. Illustrator crashes
2. Illustrator crashes again upon startup attempt
3. I submit error report
4. I try opening previous versions, which all crash on startup
5. I close all my apps and reboot.
6. Then I'm able to use Illustrator again, of course with all preferences reset, etc.

I've used the CC uninstaller and reinstalled.

I've tried installing without preferences preserved.

I've tried the three latest versions of Illustrator.

Right now as I post this, I'm about to go through my 10th cycle of closing everything and rebooting. I've been doing this whole thing for a couple weeks now, and I really don't want to have to sit on the phone with assistance so they can tell me to do all these things again.

possible related factors

Last month I updated to Mojave, then I added the 2019 version of all CC apps I use without removing the previous versions. (just in case) Dec 23, 2018 I upgraded to a new SSD which I flashed with a restore from Time Machine. About a week later was when all the crashing on startup began.

I've wondered if efficiency apps such as CleanMyMac could ever cause issues with apps functioning properly. I do run CleanMyMac, but I've not heard of it causing issues with Adobe apps. Let me know if any of you know otherwise.

other factors

I use iPad with CC apps and I use some CC apps on my iPhone.

I typically run Photoshop / Illustrator / InDesign all day, every day.

I work with large Photoshop files and fairly complex vector art at the same time.

I use Astropad Studio with iPad (to control Photoshop on my desktop) when I do image touchup work on cosmetics photography.

From time to time I use two sets of Illustrator plugins:

• Cutting Master (for vinyl cutter to make screens and signs)
• Astute Graphics Phantogram (for creation of halftone dot patterns)

Other than these I am not plugin-heavy and do not use a lot of 3rd party apps.

workstation specs

Model Name: MacBook Pro (mid 2014)

Model Identifier: MacBookPro11,2

Processor Name: Intel Core i7

Processor Speed: 2.2 GHz

Memory: 16 GB

HDD: 1TB (50% utilized)

Boot ROM Version: 149.0.0.0.0 (whatever this is - maybe this helps)

SMC Version (system): 2.18f15 (same here)