Solar sits next to 3 phonetic neighbors — Solaris, Sol, and Solar are the closest matches by sound. Most share Solar's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"of the sun, relating to the sun"
"carrier of burdens"
"wild, untamed (from silva)"
"immense quantity, boundless"
"born of fire"
"spear wood (ash was used for spears)"
"heart, courageous heart"
"son of good fortune"
"dark red, crimson"
"exalted father"
"desired, longed for"
"son of Daw (David), beloved son"
"lucky, complete"
"descendant of Bradan (salmon)"
"winter season"
"moonlit night, quality of moonlight"
"man from South Munster (southern Ireland)"
"bright, radiant"
"olive warrior"
"my joy, my song"
Similar sound: These names share phonetic patterns with Solar — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Solar.
Rhythm: Solar is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.