I'm a traditionalist, and clean a fretboard using lemon oil applied with a clean cloth and wiped off immediately. This is also what PRS recommends.
Lemon oil is merely naphtha (dry cleaning fluid) with a lemon scent. Don't let it sit on the board, because eventually any petroleum based stuff like that will simply make the rosewood's oils sit on the surface. Naphtha evaporates, and of course that's how dry cleaning stuff works to remove oils that get in clothing, so don't leave it on.
PRS recommends wiping it off, and then sealing with a furniture polish, like Behold or Pledge. My fretboards don't seem to need sealing, so mostly I skip the furniture polish, and just wipe off the lemon oil quickly. If I did notice I problem, sure, a light furniture polish like Behold or Pledge on a cloth, wiped on, would be OK, if PRS says so.
Also, I only clean a fretboard if it needs cleaning beyond wiping it down with a clean, dry cloth. that's not often around here.
Don't use food type lemon oil, it will go rancid, by the way.
Gorgomyte and miracle cloth are among the products I'd never use. Know what the ingredients are? Neither does anyone else, except the manufacturer. But if there's coconut oil in it, that's something that goes rancid. Blecccchhh.
My brother used Fast Fret on the '65 Gibson SG (that's been mine since 1967), when he had it. It's actually an old product that was taken over later by another company. Took years for that grease to wear off! It's mostly white mineral oil. Another petroleum based product, it's just going to gunk up the fretboard and attact dust and dirt. It's not the type of mineral oil people take to stay regular by the way, which would also be a bad idea.
More stuff to avoid. Just my two cents.
I realize I'm a loner here, but my guitars are in pristine condition, and here in Michigan, the winters are not kind to guitars unless you take care with them. But of course, we all have our own experiences.
Caveat emptor. Sometimes the manufacturer knows best.
While I'm at it, I should add that keeping a guitar out when not in use exposes it to whatever crap is floating around in the air, like evaporated cooking oils, or smoke, or whatever's out there. For best results, case the guitar when not in use.