Each type of DNA testing has its advantages and its disadvantages. Your autosomal results won't be helpful for someone that's 11 generations back, possible but doubtful for even 6 generations back. But yDNA will help some with identifying or rejecting males along your Clemons line. It's a male-only thing though, so your father or brothers will need to take a yDNA test. Once you have their result, you can compare with others in any Clemons/Clements study.
Your 23 and Me result comes from their new DNA analysis chip, and as you discovered, required the use of GEDmatch Genesis. For the future that's great, but it has special disadvantages currently, in that most testers are only in the regular GEDmatch database, not Genesis, so you won't be able to use your DNA to compare with many others, at least not yet, until they combine them all into one database. Plus, it's so new we don't fully understand its results. Its algorithms use different parameters, such as SNP's per segment match. I tested against yours, and at minimum SNP length of 4 have 9 segments between 4 and 5.6, which normally would mean a definite but distant relationship, unknown how distant. Genesis won't estimate how distant, until you use a minimum of 5 or greater, and for 5 it estimates we're 6.9 generations to MRCA, which is generally too far to figure out.
23 and Me provided you an mtDNA haplogroup, which you entered, but currently WikiTree does not propagate it along your maternal line. To get it to propagate, add another DNA test result (on the DNA Tests page you already used) for Other mtDNA test, and enter your mtDNA haplogroup there. Within a day, it should also propagate up all of those maternal ancestors you have added, and may be useful in the future.
Don't forget to add good sources, that document the relationships. DNA is an important tool, but in general, the paper trail is what will be most useful in discovering and confirming ancestry.
