This would be my two cents on England's FIFA referee situation,
Elite Group
Taylor - I think it is obvious going by his appointments this season that he is highly regarded by UEFA as a safe pair of hands. Indeed I think it would be fair to say he has a more typical 'European' style of refereeing (front end management style, happy to issue cards), that said he is no doubt a sophisticated referee that does also posses significant soft skills and management (not perhaps to the same extent as Oliver). His performances in the CL this season have done nothing to lay any doubt in the mind with regard to his appointment to EURO 2020, I don't think he's been fantastic (a number of VAR interventions and sometimes erratic foul detection) but no disasters and in the main competent performances.
Oliver - An interesting case, domestically he performs, I feel, better than Taylor and it seems that FIFA rate him as England's number 1 but UEFA don't seem to agree. Perhaps this is due to his style being more suited to FIFA refereeing, (strong man manager, keeps cards in pocket when he can) however having watched his performances in Europe I think he has slight problem. He isn't anywhere near as assured in his European matches as he is domestically where he is a sea of calm. I don't mean his decisions are poor but simply in his mannerisms, to me he seems caught between the rock and a hard place of wanting to be a firm referee with no problem taking strong action but also using his impressive management skills we see every week in the PL, the result is that he can sometimes come across a bit flustered (I recall in one game this season he was visibly shouting and making somewhat frantic hand gestures). I'm sure he will eventually strike the balance but he needs time to develop - time he certainly has. In my view a much better natural referee than Taylor and a better performer domestically but not in Europe. Will he go to EURO 2020? I'd say probably but I wouldn't be shocked if he didn't, WC 2022 - barring a disaster I think he's nailed on.
First Group
Pawson - For me he is the Marriner of his 'generation', will be a solid first group referee but no more. He'll get good EL group games and some knockout games as well as the occasional CL group game but won't make the elite group. A few things counting against him primarily age and better referees ahead of him, his performances in Europe have been a mixed bag, he has demonstrated in my view his best quality as a referee - no issue whatsoever with taking brave, unpopular decisions, but also his worst qualities - too passive can let the game get away from him slightly. He will probably go to EURO 2020 and WC 2020 as VAR/FO, I wouldn't be totally shocked if he made the elite as some stage but I think the odds are against him.
Second Group
Kavanagh - The biggest English prospect for me at this level and I think has a good chance of promotion to the first group even this season but probably next. Got a EL group stage game and EURO Qualifier in his first real season as FIFA referee so doing very well (also VAR and FO appointments). I rate him and think he could well make elite one day but will need to see him at a higher level first to judge properly. Oddly his star seems to have waned slightly in England, hasn't really had any big games this season. Don't really expect to see him at EURO 2020 in any capacity as (Edy please correct me on this!) Attwell and Tierney seem to be the preferred VAR's.
Tierney - I would think he is a bit behind Kavanagh despite being on FIFA list a year longer (only just got EL debut at group stage), good VAR appointments though ans I would fully expect him to make the first group in the near future and maybe more later in his career. Not my favorite referee but I think he has developed well and clearly being pushed through his domestic appointments for promotion. Chance to attend EURO 2020 as VAR I think but will depend on numbers
Attwell - Started well in UEFA refereeing -but that was 8 years ago, now? I don't think he will make it beyond the first group, I don't think UEFA are that interested in him, good enough for the big European games? Hmm, maybe he was but I have to say I think hes been very average since his return,to be quite frank I think he'll be at this level or a bit higher for the rest of his career. VAR at EURO 2020 a decent possibility though.
Coote/Madley - Can't comment as haven't been seen in Europe yet (as referee), I do think their appointment though greatly undermines the already weakened status of appointments by the FA to the FIFA list.