I saw this link posted in the International Society of Genetic Genealogy (ISOGG) Facebook group. You can view the link at https://www.smarterhobby.com/genealogy/best-dna-test/. It talks about six (6) DNA tests (23andMe, AncestryDNA, FamilyTree DNA/FTDNA, Geno 2.0 Next, LivingDNA, and MyHeritageDNA) although the article is titled: The 5 Best DNA Tests for Ancestry in 2018 – Which Testing Kit is Best and How to Choose. It focuses mostly on the non-Geno 2.0 Next tests, but does provide some information on Geno 2.0 Next (they call it Geno 2.0, but probably because they don’t realize there are some differences between Geno 2.0 and Geno 2.0 Next.
The database sizes are out of date even though it’s shows as updated October 2018. I went with my own educated guesstimates on database sizes: Estimated Stats By DNA Testing Companies which you can compare to The DNA Geek‘s estimations http://thednageek.com/database-sizes-september-2018-update/. If you noticed in some of my other blog posts I include FindMyPastDNA as a separate category. Technically, FindMyPastDNA is using LivingDNA kits. Initially, that’s what MyHeritage did when they were offering 23andMe and FTDNA kits for sale. Eventually, MyHeritageDNA opted to sell the FTDNA kits themselves, but packaged under MyHeritageDNA packaging. From what FindMyPast indicated, they will be packaging LivingDNA under the FindMyPastDNA brand in the near future.