Mixed lobular and ductal tumour - any info / insights out there? Barely nothing on internet

Hi everyone, does anyone know where I could get some information on this type of breast cancer? It’s hard to find out much about it, although it is acknowledged that it exists on all the main reputable UK sites (including the Lobular Breast Cancer Charity). Really wish that I’d had a double mastectomy now, as I don’t trust mammogrammes. Is it two tumours jumbled into one, or two separate tumours? Mine was 34mm on MRI, mixed lobular and ductal. After chemo, there was no lobular, and 9mm residual ductal. I had a mastectomy. Realise this affects a small group of people, but any input would be welcomed!! Thank you