Rooting around my collection, I had downloaded a bunch of these from soulseek over time. Here is a list of what I have from your list. Most is in flac but some albums are in .opus format. This is a newer lossy format but it is better than both mp3 and aac by a large stretch. For example, you can have music encoded with OPUS and it will sound great even as low as 64kbps. This makes it about 4x as good as mp3 as far as compression efficiency, so don't be put off by a lossy format. I would have replaced these with flacs by now if I had a source, but opus is still FAR better than mp3 could ever be. Let me know if you want any or all of these rips.
Arcal BGM Library
AG792 - Garden - Garden - 1979 (FLAC)
AML 2810G - Unknown Artist - Arcal Music Library - 1982 (FLAC)
AML 2812M - John Beeman - Arcal Music Library Moods Of The Four Seasons (FLAC)
AML 2813T - Unknown Artist - Arcal Music Library - 1984 (FLAC)
AML 2814M - Ricky Starbuster - Arcal Music Library - 1984 (FLAC)
AML 801 - Barry Bisson - Arcal Music Library (OPUS, 224kbps avg)
AML 803 - Arcal Music Library (OPUS, 224kbps avg)
AML 804 - Arcal Music Library - 1980 (OPUS, 224kbps avg)
AML 805 - Arcal Music Library - 1980 (OPUS, 224kbps avg)
AML 806A - Arcal Music Library - 1980 (OPUS, 224kbps avg)
AML 807A - Arcal Music Library - 1980 (OPUS, 224kbps avg)
Ariston Background Music
BRM001 - Italian Hits (Instrumental) - 320 kbps mp3
Roland Professional Music Library
OHCO-001-012, missing 008. all FLAC