I immediately ruled out the Trek SL6 due to being real expensive vs others with Ultegra components, and Trek is not the quality company it once was, everything is mass produced in China or Taiwan in the same factory as dozens of other brands where quality control has taken a back seat and it shows with Treks these days. I next eliminated the GENESIS Equilibrium DISC because it would be the heaviest of all the bikes, but I'm sure it would be a nice riding bike but for the money you're spending I think in the long run you would have wished to had bought a lighter bike.
So that leaves 6 bikes all of which are carbon and one is titanium. Ok, I'm a bit bias here, I own a Lynskey TI bike and it's the best riding frame I've ever been on; I'm also bias against CF bikes, I don't think they are suitable for the long term, but I'm weird that way, but a TI frame can't get gouged, it won't crack in two, you don't have to worry about making sure everything is torqued exactly correct or you could crush the CF which will result in catastrophic damage to CF, TI is just far simpler to maintain. So I voted for the Engima.
The only question mark I have concerning the Engima is the fork, I know nothing about that brand of fork, is it a generic Chinese made fork that Engima slapped their name on? and what is the rider weight limit of the fork? I couldn't find out answers to either of the questions on the internet, you would have to email them if you want to know. When I bought my Lynskey bike I had the same sort of issue with their Lynskey branded CF fork, they wouldn't tell me who made it nor did they know the rider weight limit, so I opted out of their fork and went with the Enve 2.0 fork because it had a 340 pound rider weight limit while most CF forks are between 200 and 224 pound limit. While I only weigh 175 I wanted a fork that was way over engineered for my weight thinking it would stand up to rough roads for a very long time, so far that's been true. In that same over engineered thinking I also opted for a Cane Creek 110 headset because that headset is the only one of it's kind design to give the CF steerer tube more support. Between the beefier CF Enve 2.0 fork and the beefier headset that whole steering section should be bomb proof. Not sure if Engima will give you the option to swap parts like Lynskey did. This fork issue would be the same issue with any CF fork on any of the bikes you listed, but it's also possible I maybe a bit more concerned about this than necessary...but I've seen forks fail, my bike shops I do business with have seen them fail, and it's something I've decided I didn't want happening while on a ride if I could all but eliminate it, which I feel I have done that.