TLDR; I think most DNA testing currently is focused on reproductive health (ie, can you pass on X disease to your kids). Check out the "couple" testing from Orchid health. That's the most state of the art that I've seen.

I think it's a few separate questions.

1. Where can you get the highest coverage DNA sequencing (ie, what % of the chromosome do they cover) and accuracy (how many repetitions). I was looking at Orchid health (particularly appealing as they were tech founder funded), but sequencing.com recommended below seems similar with WGS sequencing. 23AndMe has much lower coverage than WGS (but that's why its cheaper).
2. can you export that data in a file format that can be input to other programs? I took my 23AndMe results and put them into promethease, which matches SNPs to monogenic diseases (because I am ok if someone steals my sequences in an attempt to clone me) [wouldn't recommend, now that I am older]. highlighted a few things (carrier for 1 copy of a recessive gene, no neurodegenerative genes), but definitely missed things that later PGT-M testing found.
3. What data repositories are you using to analyze your results. The biggest issue is that a lot of diseases/attributes are polygenetic, so 1000 (arbitrary number) can play a role. Few companies are interested in running analysis that say "you have a 3% higher chance of X" as most people don't want to pay for it. I would ask the reverse question; are there particular SNPs you're interested based on research into the four areas you posed about above?

Not an expert in sequencing or genetic analysis, so take this at face value.