I actually think they look great with floral/floaty styles. As per other thread, better than white trainers!! Personally love a chunky loafer with a little slip dress 90s style (with a t-shirt underneath). That whole 90s look was about pairing feminine floral pieces with chunky shoes and I’m here for it!
I have a pair quite similar to the second pair you posted but leather and I wear them with loads of different outfits - they look good with most things imo!