I would see their names as:



Mane six:

Dusk Shine (male Twilight, same name chosen) Midnight Shine (evil version of Dusk Shine, male Midnight Sparkle)

Elusive (male Rarity, same name chosen)

Hovermeek (male Fluttershy, similar meaning name, bullies call him HoverGEEK)

Spectrum Sprint (male Rainbow Dash)

Apple Jack (male Applejack with separated name for slight difference)

Magenta Pie (male Pinkie Pie, keeping the "Pie" family name for him)



Thistle (female Spike)



Dusk Shine rivals:

Trixter Lulamoon (male Trixie Lulamoon)

Sunset Blaze (male Sunset Shimmer)

Starlight Twinkle (male Starlight Glimmer)



Dusk Shine family:

Sparkling Shield (female Shining Armor)

Dusk Velvet (male Twilight Velvet)

Night Glow (female Night Light)

Prince Cadenza (male Princess Cadance, married to Sparkling Shield)

Flutter Heart (male Flurry Heart, Dusk Shine's new nephew)



Elusive family:

Charmie Star (male Sweetie Belle)

Biscuit Brittle (male Cookie Crumbles)

Rhonda Flanks (female Hondo Flanks)



Hovermeek family:

Gusty Breeze (female Zephyr Breeze)

Mr. and Mrs. Meek (counterparts of Mr. and Mrs. Shy)



Spectrum Sprint family:

Stormy Boom (male Windy Whistles)

Wave Tenderhoof (female Bow Hothoof)



Apple Jack family:

Granny "Grandpa or Granpy" Smith (male Granny Smith, same name) "Granny" refers to the apple species, NOT a Grandma in his case, but in old age, he's often referred to as "Granpy" or "Grandpa" Smith to make it sound masculine and because he's a grandfather

Apple Bud (male Apple Bloom)

Macintasha (female Big Macintosh)

Bright Macintasha (female Bright Macintosh)

Pear Butter (male Pear Butter, same name to keep the Pear family name)

Grand "Grandma" Pear (female Grand Pear, same name) Grand Pear sounding like "Grandpa" is a mere coincidence, her name refers to a large pear of high quality, basically a "grand" pear



Magenta Pie family:

Granite Pie (male Marble Pie)

Limestone Pie (male Limestone Pie, same name to match cutie mark that has a lime on it)

Mudd Pie (male Maud Pie)

Magmatic Rock (female Igneous Rock, also a synonym)

Opaque Quartz (male Cloudy Quartz, also a synonym)



CMC:

Apple Bud (also listed above)

Charmie Star (also listed above)

Scootles (male Scootaloo)

Bob Seed (male Babs Seed)



CMC rivals:

Diamond Crown (male Diamond Tiara)

Silver Spoon (male Silver Spoon, same name)



Prince Solarin and Prince Lunaris (Male Celestia and Luna) Midnight Moon (evil version of Prince Lunaris, male Nightmare Moon)



Disarray (female Discord, also a synonym)