Welcome to the board.
I have 2013 Lexus RX 350 with halogen projector.
thinking to convert to standard H9 but more lumen.
H9 produces more lumens than any version of H11 you can buy.
Any thought of Philips - Diamond Vision H11 Halogen HID Super White 5000K (Pair) ?
There is a bulb called Philips Diamond Vision, but there is no bulb called "Philips Diamond Vision Halogen HID Super White 5000K", which sounds like some jerk's bogus Ebay description of the bulb. All of these so-called "whiter light" bulbs, no matter the brand, are BS, and they are all the same BS: blue-tinted glass to change the color of the headlamps. It does not make them "whiter" (there's no such thing), and it reduces their performance. Sylvania, for one, recently
got their butts handed to them for the false "upgrade" claims for their version, which they call Silver Star.
is there a white color H9?
All legitimate H9 bulbs produce white light. "Legitimate" means a reputable brand (Philips, GE, Sylvania-Osram, Narva, Flosser) with uncolored, clear glass. Halogen headlamps are not supposed to look like HIDs or LEDs; they are different technologies that look different. You will never make your halogens look like Xenons, but in the process of trying you'll make them unsafe and/or illegal.
For your info, though, the best H11 bulb is
this one.