So to dig beyond what your two questions are, what do you need to carry and what kind of bike are you planning to mount these bag(s) onto?
I have a drop bar gravel bike. I use a Revelate Designs Egress Pocket, which mounts to the front. It is claimed to be water proof, and carries a surprising amount of stuff in it.
https://www.revelatedesigns.com/inde...r/EgressPocket This bag is not designed to be accessed while riding.
The Egress Pocket is designed to mount to the front of RD's Harness, for any future bike packing needs. RD's bag, or any dry bag of the correct size can be used with the Harness. There are many versions of this design from other manufacturers, mainly cottage industry companies.
https://www.revelatedesigns.com/inde...ndlebarharness
I also have a half-frame bag from Lone Pine. It's much better quality than the cheap $12 similar bags from Amazon, but not as much $$$ as the $90+ bags from cottage industry companies
https://lonepeakpacks.com/index.php/...cks/fb110.html
I also have a Wolf Tooth B-RAD Roll-top bag for the bottle mounts at the bottom of my downtube, which carries tire repair stuff and a multi tool.
https://www.wolftoothcomponents.com/...d-roll-top-bag
A handlebar bag is very handy, and Outershell's Drawcord Handlebar bag is of excellent quality. My buddy has one. It doesn't play nice with a stem mounted GPS, especially if using an out-front mount, but otherwise, a very nice bag which CAN be accessed and quickly closed while riding:
https://www.outershelladventure.com/shop/handlebar-bag
Here is a web page hosted at another site that lists a ton of cottage industry companies specializing in bike bags, most made in the USA.
Bike Bag Finder | Riding Gravel
All of my bike bag research was done at this site, and the last site i linked. Plus online reviews from bike industry sites.
eric/fresno, ca.