It looks like there is some confusion ITT...
Title is for "Bright Ground Wounds" and the only "Ground Wound" strings you mentioned on your list are:
bass(9) mids(9) treble(8) La Bella Quarter Rounds, SS
bass(9) mids(9) treble(5) D'Addario Half-Rounds, Nickel
bass(8) mids(7) treble(6) GHS Brite Flats, Alloy52
bass(?) mids(?) treble(?) Ken Smith Slick Round, Alloy52
This is why I bought up the SIT Power Flats which are the same construction as D'Adadrio Half-Rounds (Pure Nickel winding over Hex Core ground flat).
The following are Pressure wound type strings where the outer windings are pressed smoother than regular rounds:
bass(8) mids(9) treble(8) Rotosound 55 Solo Bass, SS
bass(9) mids(8) treble(8) SIT Silencers, NPS
bass(9) mids(8) treble(5) GHS Pressurewound, Alloy52
bass(?) mids(?) treble(?) Ken Smith Compressors, Alloy52
Totally different type of strings / totally different feel / totally different tone.
Here is a visual example of standard Round Wounds / Pressure Wounds / Half Round.
Now, if you want the "Brightest Half-Round" that is going to remain sounding "bright" then I would say go with an Alloy 52 version.
Stainless Steel generally starts brighter and gets duller while Alloy 52 starts not as bright as stainless but holds the tone longer.
One thing to keep in mind when purchasing "Half-Round" type strings is a .105 Half-Wound / Ground-Round / what ever you want to call it is going to have more mass than a .105 Round Wound so will be higher tension / not as flexible. A .105 half-round starts out as a thicker string and then is ground down essentially having the mass of a larger diameter string.