I try to rotate withoutthinking too hard about it between the main protein and carb sources each week. E.g.
Beef
one or two of these each week:
spag bol
chilli and rice
beef rogan josh
goulash with dumplings
spiced minced beef wraps
keema mince & naan
boeuf bourgignon and mash
lasagne
burgers with matchstick fries and salad
Chicken
roast chicken, roast potatoes & veg
chicken paprika wraps with salad
Mediterranean chicken thighs with baked mini potatoes
chicken noodle soup
chicken stir fry with rice or noodles
chicken risotto
chicken, leek and mushroom pie
chicken thai green curry
chicken satay
Fish
grilled or baked salmon slices with steamed veg
fish & chips
fish pie
kedgeree
roast cod in tapenade
fish fingers, chips, peas and beans
smoked salmon and cream cheese pasta
Pork
bacon and chorizo paella
roast pork with apple sauce, veg and roast potatoes
pork and beans with lemon
smoky bbq pork and beans
pork stir fry
sausage and mash
lamb
Roast lamb
middle eastern lamb with humous and flatbreads
lamb and spimach curry
kofte kebabs with rice
sausages with couscous, harissa and veg
Veggie
pasta pomodoro
frittata and salad
home made pizzas
macaroni/cauliflower cheese
humous & falafel
eggs, beans and chips
baked potatoes with cheese, beans and coleslaw
veggie chilli and brown rice
dahl, rice and sag aloo
There's other stuff too but I mainly rotate this sort of thing over a month