I've actually been searching for relatively large capacity cases with some hot swap abilities. This is what I've narrowed my list down to for my build I plan do late this year or early 2020.
Fractal Design Define R5 => 2 x 5.25", 8 x 3.5", 2 x 2.5"
- Personally, this is my favorite so far. I like that you put the drives in on the opposite side you put the SATA power and data cables. Although you have to open the other side, you have less chance of knocking a power or data cable loose from another drive. Most 2 x 5.25" cages will work and I have a ICY DOCK MB153SP-B that will go perfect to give me a possible 11 x 3.5" drives.
Antec P9 Window => 3 x 5.25", 8 x 3.5", 2 x 2.5"
- Decent case that is a little old but pretty darn cheap if you can find them on eBay. The 3 x 5.25" cage would be perfect to get an additional 4 or 5 3.5" drives.
SilverStone CS380 => 2 x 5.25", 8 x 3.5", 0 x 2.5"
- Has 8 hot swap spots built directly into the case which is pretty cool. I don't like that you have to mod it to get decent cooling and there are no designated spots for 2.5" SSD's. I guess you could tape some above the hard drive cage but yeah, pretty limited.
Corsair 500R => 4 x 5.25", 6 x 3.5", 0 x 2.5"
- Decent room to add a 4 or 5 additional 3.5" drives with a large 3 x 5.25" cage and I could add an additional 4 x 2.5" drives with my ICY DOCK MB994SP-4SB-1 which only takes up 1 x 5.25" bay.
Phanteks Enthoo Luxe => 3 x 5.25", 6 x 3.5", 2 x 2.5"
- Appears to be a decent case but I haven't researched it a whole lot
SilverStone Raven RV03B-W => 7 x 5.25", naturally 6 x 3.5" that take up 6 of those 7 x 5.25" bays but also 4 x 3.5" behind motherboard, 2 x 2.5"
- This is probably my second favorite case and it's probably the most different out of any of them. Lots of airflow with a tremendous amount of opportunity to add several hot swap cages but also nice that it can do 10 x 3.5" naturally without any other hardware. I'm not 100% if airflow would be okay with a 120mm fan on the side panel but it looks like it would be enough. This one isn't pretty but it's got a ton of character.
Hope that helps. I can only speak for ICY DOCK cages but I've really enjoyed them so far.