Wow. Lots of intriguing suggestions, some of which I already own but haven't read yet, thank you all.
Too many to answer everyone directly.
Among others; I have read everything by Marian Keyes, Taylor Jenkins Reid, Catherine Steadman and Liane Moriarty, I have her next novel on pre order with my local bookshop. I have read everything Roddy Doyle, aside from his children's books.
Read Crawdads and I didn't love it sorry, I know how beloved it is.
By contrast, I thought The Silent Patient was excellent and I have enjoyed both Harriet Tyce books.
I read both Sally Rooney's, they left me thinking is that it...?
Didn't like Shuggie Bain.
Loved Restoration.
Loved Degrees Of Guilt by H S Chandler.
And really enjoyed all three Donna Tartt novels again, not always popular on these threads.
When have time I read the reviews and buy anything current that catches my eye. I'm so retentive I have lists of to buy, bought must read as well as diaries of everything I have read.
Yeah. I'm a proper nerd 
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Someone suggested Kate Atkinson. I read the one with the bird on the front - Big Sky? It didn't make me want to read any more by her, though I'm happy to be wrong if I'm missing something.
Having said that I'm not fussed on historical fiction, I enjoyed The Crimson Petal And The White. Also, all of the Wolf Hall books, even though they polarise opinion. Others too, though it's late and I'll reengage my brain tomorrow and remember some more 
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When I started this thread I didn't want lots of posters suggesting Jane Austen or Dickens etc.
If it's really good historical fiction I like it.
Ideally, I would like to read a very good novel(s) set during The Troubles. Being British I saw so much anti-Ireland rhetoric when I was young, I would like to read novels that redress the balance. I read Milkman, thought it was ok but would like to know more from a human perspective. IYSWIM?
I spent some of my childhood in Jamaica. A Brief History Of Seven Killings was, for me, chilling, evocative and gripping.
Maeve Binchy takes me back! As a child I was packed off to my Grandparent's for weeks during the holidays. My Grandma bought every Maeve Binchy as they came out. As I had read all of my own books I ploughed through the Maeve Binchys, there may be more that I haven't read. I would be up for reading them.
My Grandma was keen to encourage my reading, she got me into James Joyce! Amongst many other things. Also what I can best describe as 1970s/80s mass appeal feminism 
- and Jackie Collins.
I've read all of the John Marrs. IMO you can track his development as a writer if they are read in order. My main John Marrs frustration is that he has innovative ideas, his novels are very gripping to begin with but somehow their endings lose the momentum, though this is better in later novels.
I'm old enough to remember Jeffrey Archer as a politician, his books might be classics but I can't bring myself to read any.