Got it all thanks!  We have also been discussing this with other controllers on the VATSTAR Discord.  Sorry for the cross-post.  No hard feelings and not trying to call anyone out.  I am just a fairly new simmer trying to learn and understand.  It is all very good and I am having fun.  I appreciate all of the controllers who donate their time and knowledge to make this all possible. My goal is to become a controller one day.  Thanks so much for your responses.

I've noticed on SkyVector that not all fixes are shown on the charts.  Yesterday I was practicing for my P2 check ride flying out of Love Field KDAL to Tyler Pounds Regional KTYR.  Looking at the World Low chart on SkyVector I see KDAL->ROCKK->TYR->KTYR.  Looking on Flightaware I see two flight plans referencing the HUBB9 and GARL6 departures.  Both departures show the same route but add the CLARE fix between KDAL and ROCKK.   CLARE is not shown on the World Low chart.  OK, "good job," I think, "You did your homework properly."  So when I get online I file KDAL->HUBB9->CLARE->ROCKK->TYR->KTYR.  I call for clearance and get an amended route of KDAL->HANUH->CLARE->ROCKK->TYR->KTYR.   "WTF,"  I say to myself, "What is HANUH?"  So I ask for time to look at it and enter HANUH into SkyVector and sure enough it comes up as a crosshair waypoint with no label.  In addition, adding HANUH into the route puts a sharp 90 degree jog into the route which I don't think is really appropriate, but I digress.  Never the less, I accepted the amendment and flew it.  In the spirit of trying to be right more than wrong, what does a guy have to go by if the controllers are using fixes that don't show up on the World Low chart or the SIDs?  Did I miss something in my research?  What is the controller looking at that I missed?  I'm not upset, I'm just trying to learn how to do my part to lessen the load on the controllers and have fewer corrections in the process.  I will admit it does create a bit of anxiety in met when an amendment is issued to what was thought to be a well planned route. Just curious if I am missing something.

The other day I flew from KFSD (Sioux Falls) to KMSP (Minneapolis) IFR in a Diamond DA62 (Baron type aircraft with twin piston/prop engines about 180 KTS TAS).  I originally filed using the TORGY3 STAR and was told by ATC I couldn't do that because the TORGY3 STAR is for Turbojet aircraft only -fair enough. ATC then assigned me the SKETR5 STAR which I flew without issue.  The SKETR5 STAR does not say Turbojet Only on it but it does reference Turbojet and Turboprop altitudes on it.  I understand the issues involved with slow aircraft clogging up a big boy arrival, so how do I go about choosing SIDS and STARS when flying IFR in slower GA aircraft like the DA62 or C172?  Is anything that doesn't say Turbojet only fair game? Or should I just file VOR to VOR or direct using waypoints and let ATC vector me out of and into the terminal areas?  I wasn't offended and appreciate the correction, I just don't want to make the same mistake twice.  Thanks!