Release years for these rare disco songs?

[discosavvy]

I would like to know the years in which the following disco songs were first released commercially.

"I'm Caught Up" by Risco Connection (probably 1979)
"Skate Dancer" by Vinzerelli (probably 1979 or 1980)
The above 2 tracks are on the new compilation "Kings of Disco" by Dimitri from Paris and Joey Negro, but I don't own it yet so I haven't read the liner notes. Maybe someone can check them for me?

"Are You Ready" by Disco Circus
"Lover Love Me" by Disco Circus
"Sunshine of Your Love" by Disco Circus
"Take Your Time" by Disco Circus
"Gimmie Some Lovin'" by Disco Circus
The above 5 tracks were on a rare LP called "Plastic Paradise".

"Hollywood Party" by Hi-Voltage (probably 1979 or 1980)
"Stomp" by Moses Tyler (sometime during the 1980s)
"America, Here We Come" by Prestige (probably early 1980s)
"Fan-Tasy" by Wylie
"Pumping Iron" by Larry Wood
"Sunshine Day" by Ronnie Jones
"Slippin' Away" by Independent M
"Let Me Be Your Fantasy" by Disco Fantasy
"Just Having Fun" by Carl Harvey
"To Be Free" by Luther Davis Group (before its 2004 re-release)
"You Can be a Star" by Luther Davis Group (before its 2004 re-release)
"Wake Up and Make Love with Me" by Patrick Duvét and the Sweet Perversions
"Theme from 'Superman'" by Star Galaxy Orchestra (probably 1979 or 1980)
"Let Me Be Your Radio (Radio Show)" by Red Dragon Band
"I Got the Need" by the Moments (probably mid-1970s)
"Gift of Love" by the Mighty Chevelles
"Wendy is Gone" by Percy and Them (probably mid-1970s)
"Disco Bechet" and "Disco Cool" by Smash Disco
"La Chatte a la voisine (Le Chat)" by Willy Cat
"Le Tube a Leo" by Leo and Co.
"Praise Jah" by Oluko Umo
"Shakara Oloje-Lady" by Ephraim Uzomechina Nzeka
"Kaldule Woman" by Malinga Five/Shelly D'alan

The James Last version of Quincy Jones's "Stuff Like That"

"Mandolay" by Gary's Gang (was the 1990 CD single the first release?) - this is a cover of the La Flavour classic. It sounds like a modern production in terms of its recording quality, but it's still true to the original in its sound.

A jazzy disco song by Ronnie Laws which might be titled "Nothin' 'Bout Nothin'" but I don't know for sure