Planning to stock FTTH materials for the CA market (Drop cables/Patch cords) - What’s the current field preference?

Hi everyone,
I’m starting a distribution business in California (Lumina Fiber Solutions) and I’m looking to narrow down my inventory to the top 3-4 most used items for residential and small commercial FTTH installs.
I’ve been looking at the following, but I’d love some feedback from guys actually out in the field:

1. Drop Cables: Are you mostly using Flat Drop (Non-Armored) for those last-mile runs? Also, is there a shift towards Pre-terminated Drop Cables to save time on-site, or is everyone still doing fusion splicing/mechanical connectors?
2. Patch Cables: For indoor connections to the ONT/Router, is LC/UPC to LC/UPC Duplex (Singlemode OS2) still the "gold standard," or are you seeing more SC/APC requirements for GPON setups?
3. Termination Boxes: What kind of wall outlets/rosettes are the most installer-friendly? Are you guys preferring the small compact ones that can hold a few splices, or something more rugged?
   I want to make sure I’m importing what's actually being used and not what just looks good on a catalog page.
   Any advice on UL ratings requirements or specific brands that set the bar for quality in the US would be greatly appreciated!
   Thanks in advance!