Font used in logo

Someone created this logo years ago and I have no idea what the font (used for "Hillrich Müller") is called . I hope you can help me!


It's very close to a combination of:

Arial Bold +
a custom /r +
the /M of Media Gothic

I think Hillrich Müller is based on Helvetica with custom r and custom M.
Immobilien looks like AvantGarde.

Not sure about Arial (it could be entirely hand-made), but surely it isn't based on Helvetica (look at the angled terminals of e and c). Arial is indeed more similar.

Ok. Thanks.