This is a current list...

[Midnight Palace]

...of the Leila films I've managed to get copies of I know there are more that are out there, 1931's Stepping Out and also 1931's Surrender for example, so I'm looking forward to tracking down more!

I currently have:

Dancing Mothers (1926)
A Girl in Every Port (1928)
The Idle Rich (1929)
The Thirteenth Chair (1929)
Spite Marriage (1929)
The Big House (1930)
The Flirting Widow (1930)
The Girl Said No (1930)
The Bishop Murder Case (1930)
The Sins of the Children (1930)
Way Out West (1930)
Men Call It Love (1931)
Gentleman's Fate (1931)
New Adventures of Get Rich Quick Wallingford (1931)
The Phantom of Paris (1931)
Island of Lost Souls (1932)
The Big Broadcast (1932)
Red-Headed Woman (1932)
Freaks (1932)
Saturday's Millions (1933)
Affairs of a Gentleman (1934)
The Poor Rich (1934)
People Will Talk (1935)
Ruggles of Red Gap (1935)
Yellow Dust (1936)
First Aid (1943) - short