Till,
The three you were asking about were all developed by Dr Brown out of Texas. I have thank Matt for helping me find these. A couple of these are mentioned along with many others in the Hardy Citrus for the Southeast booklet by Tom McClendon. The PDF to this booklet is now free and easily found with a quick search on the internet. Reading this booklet inspired my desire to try and collect all of varieties mentioned.
I don't remember the citrumelo x changsha talked about in the book. In my opinion this variety isn't very good. The fruit is about the size of small grapefruit and doesn't seem to have much else going for it besides sour and some off flavors.
Here's what's written about the CiClem #10 aka Golden lime which I pretty much agree with:
Developed by John Brown of Texas. As the CiClem name implies, it was one of a number of crosses with Clementine mandarin, which readily sets hybrids. This particular culti-var has fruit the size of an egg with light orange flesh and is sometimes called the golden lime. When diluted with an equal amount of water the juice makes a good limeade drink. The tree is spreading and large with few thorns on bearing wood.
Flavor:
Sour lime, some off-flavors, fair to good quality.
(Clem x Tri) x Clem
Now out of many of the hardy citrus I grow this one really stands out to me. The tree is unifoliate for the most part, pretty much thornless and produces a fruit about the size of clementine with incredible contrasts. The skin of the fruit is a bright deep orange but when you cut into the fruit it is lime green. It's flavor is lime-like (with a little imagination) but with very little or no off flavors. I think it gives Dragon Lime a run for its money but it does have way more seeds. I snapped some pictures of this fruit but a little later in the season. When picked in November -December you will see much more contrast than in the following pictures. I think I finally took these in late January:
Washed out picture and picked late. Much more lime-green than depicted here when picked earlier
Till PM me with your address and I'll see about getting your seeds together.